Mathway | Problèmes fréquents

Problèmes fréquents

Rang	Matière	Problème	Problème de formatage
1301	Multiplier les matrices	[[2,-2],[-11,1]][[0,-2],[5,1]]	$[\begin{array}{c} 2 & - 2 \\ - 11 & 1 \end{array}] [\begin{array}{c} 0 & - 2 \\ 5 & 1 \end{array}]$
1302	Multiplier les matrices	[[-2,-2],[2,2]][[-2,-2],[2,2]]	$[\begin{array}{c} - 2 & - 2 \\ 2 & 2 \end{array}] [\begin{array}{c} - 2 & - 2 \\ 2 & 2 \end{array}]$
1303	Multiplier les matrices	[[2,3,0],[1,-1,1],[-1,6,4]][[1,0,-2],[-3,1,1],[2,0,-1]]	$[\begin{array}{c} 2 & 3 & 0 \\ 1 & - 1 & 1 \\ - 1 & 6 & 4 \end{array}] [\begin{array}{c} 1 & 0 & - 2 \\ - 3 & 1 & 1 \\ 2 & 0 & - 1 \end{array}]$
1304	Multiplier les matrices	[[2,-3,1],[1,2,-1],[2,2,2]][[4],[5],[6]]	$[\begin{array}{c} 2 & - 3 & 1 \\ 1 & 2 & - 1 \\ 2 & 2 & 2 \end{array}] [\begin{array}{c} 4 \\ 5 \\ 6 \end{array}]$
1305	Multiplier les matrices	[[-2,-3,2]][[3],[-2],[4]]	$[\begin{array}{c} - 2 & - 3 & 2 \end{array}] [\begin{array}{c} 3 \\ - 2 \\ 4 \end{array}]$
1306	Multiplier les matrices	[[2,-3,3]]*[[3,-2,1]]	$[\begin{array}{c} 2 & - 3 & 3 \end{array}] \cdot [\begin{array}{c} 3 & - 2 & 1 \end{array}]$
1307	Multiplier les matrices	[[2,-3,4],[6,2,4],[0,2,7]][[4,-3,2],[0,1,1],[5,5,3]]	$[\begin{array}{c} 2 & - 3 & 4 \\ 6 & 2 & 4 \\ 0 & 2 & 7 \end{array}] [\begin{array}{c} 4 & - 3 & 2 \\ 0 & 1 & 1 \\ 5 & 5 & 3 \end{array}]$
1308	Multiplier les matrices	[[2,-3,-5],[-1,4,5],[1,-3,-4]]*[[-1,3,5],[1,-3,-5],[-1,3,5]]	$[\begin{array}{c} 2 & - 3 & - 5 \\ - 1 & 4 & 5 \\ 1 & - 3 & - 4 \end{array}] \cdot [\begin{array}{c} - 1 & 3 & 5 \\ 1 & - 3 & - 5 \\ - 1 & 3 & 5 \end{array}]$
1309	Multiplier les matrices	[[2,3,5],[3,4,6],[5,6,7]][[6,0,0],[0,4,0],[0,0,2]]	$[\begin{array}{c} 2 & 3 & 5 \\ 3 & 4 & 6 \\ 5 & 6 & 7 \end{array}] [\begin{array}{c} 6 & 0 & 0 \\ 0 & 4 & 0 \\ 0 & 0 & 2 \end{array}]$
1310	Multiplier les matrices	[[2,3]]*[[3,4]]	$[\begin{array}{c} 2 & 3 \end{array}] \cdot [\begin{array}{c} 3 & 4 \end{array}]$
1311	Multiplier les matrices	[[-2,3],[0,1]][[8,1],[5,4]]	$[\begin{array}{c} - 2 & 3 \\ 0 & 1 \end{array}] [\begin{array}{c} 8 & 1 \\ 5 & 4 \end{array}]$
1312	Multiplier les matrices	[[2,3],[-1,-1],[5,3]][[4,3,2,1],[-4,0,3,-2]]	$[\begin{array}{c} 2 & 3 \\ - 1 & - 1 \\ 5 & 3 \end{array}] [\begin{array}{c} 4 & 3 & 2 & 1 \\ - 4 & 0 & 3 & - 2 \end{array}]$
1313	Multiplier les matrices	[[2,3],[-1,2]][[4,1],[0,6]]	$[\begin{array}{c} 2 & 3 \\ - 1 & 2 \end{array}] [\begin{array}{c} 4 & 1 \\ 0 & 6 \end{array}]$
1314	Multiplier les matrices	[[2,-3],[1,4]][[0,-4],[5,1]]	$[\begin{array}{c} 2 & - 3 \\ 1 & 4 \end{array}] [\begin{array}{c} 0 & - 4 \\ 5 & 1 \end{array}]$
1315	Multiplier les matrices	[[2,-3],[1,4]][[-12,12],[13,-13]]	$[\begin{array}{c} 2 & - 3 \\ 1 & 4 \end{array}] [\begin{array}{c} - 12 & 12 \\ 13 & - 13 \end{array}]$
1316	Multiplier les matrices	[[-2,-8],[0,4],[1,6]]*[[-4,0],[7,5],[1/4,2]]	$[\begin{array}{c} - 2 & - 8 \\ 0 & 4 \\ 1 & 6 \end{array}] \cdot [\begin{array}{c} - 4 & 0 \\ 7 & 5 \\ \frac{1}{4} & 2 \end{array}]$
1317	Multiplier les matrices	[[-2,8],[10,-5]]*[[11,15],[14,23]]	$[\begin{array}{c} - 2 & 8 \\ 10 & - 5 \end{array}] \cdot [\begin{array}{c} 11 & 15 \\ 14 & 23 \end{array}]$
1318	Multiplier les matrices	[[2],[1]]*[[3],[2]]	$[\begin{array}{c} 2 \\ 1 \end{array}] \cdot [\begin{array}{c} 3 \\ 2 \end{array}]$
1319	Multiplier les matrices	[[2],[-2]]*[[2,3],[0,3],[-1,-8]]	$[\begin{array}{c} 2 \\ - 2 \end{array}] \cdot [\begin{array}{c} 2 & 3 \\ 0 & 3 \\ - 1 & - 8 \end{array}]$
1320	Multiplier les matrices	[[2],[-3]][[9],[6]]	$[\begin{array}{c} 2 \\ - 3 \end{array}] [\begin{array}{c} 9 \\ 6 \end{array}]$
1321	Multiplier les matrices	[[2],[-3],[1]][[2,-3,1]]	$[\begin{array}{c} 2 \\ - 3 \\ 1 \end{array}] [\begin{array}{c} 2 & - 3 & 1 \end{array}]$
1322	Multiplier les matrices	[[2],[3],[4]]*[[0,1,-8],[11,10,12],[3,-14,7]]	$[\begin{array}{c} 2 \\ 3 \\ 4 \end{array}] \cdot [\begin{array}{c} 0 & 1 & - 8 \\ 11 & 10 & 12 \\ 3 & - 14 & 7 \end{array}]$
1323	Multiplier les matrices	[[2e^x,-e^(-x),e^(-3x)],[-e^x,-e^(-x),-2e^(-3x)],[3e^x,6e^(-x),6e^(-3x)]][[2/3e^(-x),4/3e^(-x),1/3e^(-x)],[0,e^x,1/3e^x],[-1/3e^(3x),-15/9e^(3x),-1/3e^(3x)]]	$[\begin{array}{c} 2 e^{x} & - e^{- x} & e^{- 3 x} \\ - e^{x} & - e^{- x} & - 2 e^{- 3 x} \\ 3 e^{x} & 6 e^{- x} & 6 e^{- 3 x} \end{array}] \cdot [\begin{array}{c} \frac{2}{3} \cdot e^{- x} & \frac{4}{3} \cdot e^{- x} & \frac{1}{3} \cdot e^{- x} \\ 0 & e^{x} & \frac{1}{3} \cdot e^{x} \\ - \frac{1}{3} \cdot e^{3 x} & - \frac{15}{9} \cdot e^{3 x} & - \frac{1}{3} \cdot e^{3 x} \end{array}]$
1324	Multiplier les matrices	[[20,45],[25,50],[20,10]]*[[15],[9]]	$[\begin{array}{c} 20 & 45 \\ 25 & 50 \\ 20 & 10 \end{array}] \cdot [\begin{array}{c} 15 \\ 9 \end{array}]$
1325	Multiplier les matrices	[[2i,0],[i,1+2i]]*[[i,1+i],[2-3i,4]]	$[\begin{array}{c} 2 i & 0 \\ i & 1 + 2 i \end{array}] \cdot [\begin{array}{c} i & 1 + i \\ 2 - 3 i & 4 \end{array}]$
1326	Multiplier les matrices	[[3,0,0],[0,0,5]][[1,0,1],[1,1,1],[0,1,0]]	$[\begin{array}{c} 3 & 0 & 0 \\ 0 & 0 & 5 \end{array}] [\begin{array}{c} 1 & 0 & 1 \\ 1 & 1 & 1 \\ 0 & 1 & 0 \end{array}]$
1327	Multiplier les matrices	[[-3,0,0],[1,-1,0],[-3,-4,-4]]*[[-3,0,0],[1,-1,0],[-3,-4,-4]]	$[\begin{array}{c} - 3 & 0 & 0 \\ 1 & - 1 & 0 \\ - 3 & - 4 & - 4 \end{array}] \cdot [\begin{array}{c} - 3 & 0 & 0 \\ 1 & - 1 & 0 \\ - 3 & - 4 & - 4 \end{array}]$
1328	Multiplier les matrices	[[-3,0,1],[-5,3,-5],[1,0,-3]][[1],[2],[1]]	$[\begin{array}{c} - 3 & 0 & 1 \\ - 5 & 3 & - 5 \\ 1 & 0 & - 3 \end{array}] [\begin{array}{c} 1 \\ 2 \\ 1 \end{array}]$
1329	Multiplier les matrices	[[-3,0,1],[5,-7,5],[1,0,-3]][[-3],[-6],[-3]]	$[\begin{array}{c} - 3 & 0 & 1 \\ 5 & - 7 & 5 \\ 1 & 0 & - 3 \end{array}] [\begin{array}{c} - 3 \\ - 6 \\ - 3 \end{array}]$
1330	Multiplier les matrices	[[-3,0,5],[2,-1,5],[-4,2,2]][[1,-2,3],[0,5,-4]]	$[\begin{array}{c} - 3 & 0 & 5 \\ 2 & - 1 & 5 \\ - 4 & 2 & 2 \end{array}] [\begin{array}{c} 1 & - 2 & 3 \\ 0 & 5 & - 4 \end{array}]$
1331	Multiplier les matrices	[[-3,0],[1,-2],[-1,-1]]*[[1,4,2],[3,1,5]]	$[\begin{array}{c} - 3 & 0 \\ 1 & - 2 \\ - 1 & - 1 \end{array}] \cdot [\begin{array}{c} 1 & 4 & 2 \\ 3 & 1 & 5 \end{array}]$
1332	Multiplier les matrices	[[-3,0],[2,-5],[-7,4]][[1,0,1],[0,1,1]]	$[\begin{array}{c} - 3 & 0 \\ 2 & - 5 \\ - 7 & 4 \end{array}] [\begin{array}{c} 1 & 0 & 1 \\ 0 & 1 & 1 \end{array}]$
1333	Multiplier les matrices	[[3,0],[6,7]]*[[-2,5],[6,3]]	$[\begin{array}{c} 3 & 0 \\ 6 & 7 \end{array}] \cdot [\begin{array}{c} - 2 & 5 \\ 6 & 3 \end{array}]$
1334	Multiplier les matrices	[[3,1,-1],[0,-1,-1],[0,-1,-2],[0,2,1]]*[[3,1,-1],[0,-1,-1],[0,0,-1],[0,0,-1]]	$[\begin{array}{c} 3 & 1 & - 1 \\ 0 & - 1 & - 1 \\ 0 & - 1 & - 2 \\ 0 & 2 & 1 \end{array}] \cdot [\begin{array}{c} 3 & 1 & - 1 \\ 0 & - 1 & - 1 \\ 0 & 0 & - 1 \\ 0 & 0 & - 1 \end{array}]$
1335	Multiplier les matrices	[[3,1,-1],[-1,1,3]][[-1.1259,2.2518,-1.1259],[2.2512,-4.5036,2.2518],[-1.1259,2.2518,-1.1259]]	$[\begin{array}{c} 3 & 1 & - 1 \\ - 1 & 1 & 3 \end{array}] [\begin{array}{c} - 1.1259 & 2.2518 & - 1.1259 \\ 2.2512 & - 4.5036 & 2.2518 \\ - 1.1259 & 2.2518 & - 1.1259 \end{array}]$
1336	Multiplier les matrices	[[3,1,1],[1,3,1],[1,1,3]]*[[3],[5],[7]]	$[\begin{array}{c} 3 & 1 & 1 \\ 1 & 3 & 1 \\ 1 & 1 & 3 \end{array}] \cdot [\begin{array}{c} 3 \\ 5 \\ 7 \end{array}]$
1337	Multiplier les matrices	[[3,1,1],[1,3,1],[1,1,3]]*[[4],[6],[8]]	$[\begin{array}{c} 3 & 1 & 1 \\ 1 & 3 & 1 \\ 1 & 1 & 3 \end{array}] \cdot [\begin{array}{c} 4 \\ 6 \\ 8 \end{array}]$
1338	Multiplier les matrices	[[-3,1,1],[-6,2,1],[-2,1,0]]*[[3,-7,-10],[10,-2,8],[5,4,-5]]	$[\begin{array}{c} - 3 & 1 & 1 \\ - 6 & 2 & 1 \\ - 2 & 1 & 0 \end{array}] \cdot [\begin{array}{c} 3 & - 7 & - 10 \\ 10 & - 2 & 8 \\ 5 & 4 & - 5 \end{array}]$
1339	Multiplier les matrices	[[3,-1,3],[5,-5,-2],[-5,1,-4]][[5],[4],[-1]]	$[\begin{array}{c} 3 & - 1 & 3 \\ 5 & - 5 & - 2 \\ - 5 & 1 & - 4 \end{array}] [\begin{array}{c} 5 \\ 4 \\ - 1 \end{array}]$
1340	Multiplier les matrices	[[3,-1,5],[0,6,3],[-4,1,9]]*[[0,-1,2],[1,4,2],[3,6,9]]	$[\begin{array}{c} 3 & - 1 & 5 \\ 0 & 6 & 3 \\ - 4 & 1 & 9 \end{array}] \cdot [\begin{array}{c} 0 & - 1 & 2 \\ 1 & 4 & 2 \\ 3 & 6 & 9 \end{array}]$
1341	Multiplier les matrices	[[3,-1],[-5/4,1/2]]*[[8],[1]]	$[\begin{array}{c} 3 & - 1 \\ - \frac{5}{4} & \frac{1}{2} \end{array}] \cdot [\begin{array}{c} 8 \\ 1 \end{array}]$
1342	Multiplier les matrices	[[3,1],[-1,2]]*[[0,0,0],[2,-1,3]]	$[\begin{array}{c} 3 & 1 \\ - 1 & 2 \end{array}] \cdot [\begin{array}{c} 0 & 0 & 0 \\ 2 & - 1 & 3 \end{array}]$
1343	Multiplier les matrices	[[3,1],[1,3]]*[[3,3,-8],[-8,-1,11]]	$[\begin{array}{c} 3 & 1 \\ 1 & 3 \end{array}] \cdot [\begin{array}{c} 3 & 3 & - 8 \\ - 8 & - 1 & 11 \end{array}]$
1344	Multiplier les matrices	[[3,-1],[2,3]][[11,-1],[0,3]]	$[\begin{array}{c} 3 & - 1 \\ 2 & 3 \end{array}] [\begin{array}{c} 11 & - 1 \\ 0 & 3 \end{array}]$
1345	Multiplier les matrices	[[2,4],[5,3]]*[[2,3],[3,3]]	$[\begin{array}{c} 2 & 4 \\ 5 & 3 \end{array}] \cdot [\begin{array}{c} 2 & 3 \\ 3 & 3 \end{array}]$
1346	Multiplier les matrices	[[-2,4],[5,7]]*[[7,-3],[8,-9]]	$[\begin{array}{c} - 2 & 4 \\ 5 & 7 \end{array}] \cdot [\begin{array}{c} 7 & - 3 \\ 8 & - 9 \end{array}]$
1347	Multiplier les matrices	[[-2,5,0],[-1,-1,1],[-3,0,3]]*[[-2,5,0],[-1,-1,1],[-3,0,3]]	$[\begin{array}{c} - 2 & 5 & 0 \\ - 1 & - 1 & 1 \\ - 3 & 0 & 3 \end{array}] \cdot [\begin{array}{c} - 2 & 5 & 0 \\ - 1 & - 1 & 1 \\ - 3 & 0 & 3 \end{array}]$
1348	Multiplier les matrices	[[2,5],[7,9]][[4,8],[10,5]]	$[\begin{array}{c} 2 & 5 \\ 7 & 9 \end{array}] [\begin{array}{c} 4 & 8 \\ 10 & 5 \end{array}]$
1349	Multiplier les matrices	[[2,6,4],[-3,2,5],[-5,-4,1]][[1],[-1],[1]]	$[\begin{array}{c} 2 & 6 & 4 \\ - 3 & 2 & 5 \\ - 5 & - 4 & 1 \end{array}] [\begin{array}{c} 1 \\ - 1 \\ 1 \end{array}]$
1350	Multiplier les matrices	[[2,6],[9,8],[5,6],[3,3]]*[[1,6,6],[7,8,9],[4,5,6],[2,1,4]]	$[\begin{array}{c} 2 & 6 \\ 9 & 8 \\ 5 & 6 \\ 3 & 3 \end{array}] \cdot [\begin{array}{c} 1 & 6 & 6 \\ 7 & 8 & 9 \\ 4 & 5 & 6 \\ 2 & 1 & 4 \end{array}]$
1351	Multiplier les matrices	[[-1/3,-1/2],[1,1]][[6138,3070],[-46650,-23326]]	$[\begin{array}{c} - \frac{1}{3} & - \frac{1}{2} \\ 1 & 1 \end{array}] [\begin{array}{c} 6138 & 3070 \\ - 46650 & - 23326 \end{array}]$
1352	Multiplier les matrices	[[1/3,1/3,1/3],[-1/2,0,1/2]][[1],[1],[0]]	$[\begin{array}{c} \frac{1}{3} & \frac{1}{3} & \frac{1}{3} \\ - \frac{1}{2} & 0 & \frac{1}{2} \end{array}] [\begin{array}{c} 1 \\ 1 \\ 0 \end{array}]$
1353	Écrire comme une égalité vectorielle	x+2y-z=4 , 3x-y+7z=-3 , 4x+y+6z=1	$x + 2 y - z = 4$ , $3 x - y + 7 z = - 3$ , $4 x + y + 6 z = 1$
1354	Écrire comme une égalité vectorielle	x+2y-z=-9 , x+z=5 , 2x-y-z=-11	$x + 2 y - z = - 9$ , $x + z = 5$ , $2 x - y - z = - 11$
1355	Multiplier les matrices	[[1/12,-1/6],[5/24,1/12]][[-2],[-31]]	$[\begin{array}{c} \frac{1}{12} & - \frac{1}{6} \\ \frac{5}{24} & \frac{1}{12} \end{array}] [\begin{array}{c} - 2 \\ - 31 \end{array}]$
1356	Multiplier les matrices	[[1/15,-1/5],[4/15,1/5]]*[[9],[-27]]	$[\begin{array}{c} \frac{1}{15} & - \frac{1}{5} \\ \frac{4}{15} & \frac{1}{5} \end{array}] \cdot [\begin{array}{c} 9 \\ - 27 \end{array}]$
1357	Multiplier les matrices	[[1/17,7/68],[-1/17,5/34]][[9,0],[0,1]]	$[\begin{array}{c} \frac{1}{17} & \frac{7}{68} \\ - \frac{1}{17} & \frac{5}{34} \end{array}] [\begin{array}{c} 9 & 0 \\ 0 & 1 \end{array}]$
1358	Multiplier les matrices	[[-1/19,-2/19,-14/95],[-13/95,-7/95,-11/475],[-3/95,13/95,34/475]][[1,0,0],[0,1,0],[0,4,1]]	$[\begin{array}{c} - \frac{1}{19} & - \frac{2}{19} & - \frac{14}{95} \\ - \frac{13}{95} & - \frac{7}{95} & - \frac{11}{475} \\ - \frac{3}{95} & \frac{13}{95} & \frac{34}{475} \end{array}] [\begin{array}{c} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 4 & 1 \end{array}]$
1359	Multiplier les matrices	[[1/2,( racine carrée de 3)/2],[-( racine carrée de 3)/2,1/2]]*[[0,0],[0,1]]	$[\begin{array}{c} \frac{1}{2} & \frac{\sqrt{3}}{2} \\ - \frac{\sqrt{3}}{2} & \frac{1}{2} \end{array}] \cdot [\begin{array}{c} 0 & 0 \\ 0 & 1 \end{array}]$
1360	Multiplier les matrices	[[1/2,1/2],[1/4,-1/4]][[3],[-1]]	$[\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{4} & - \frac{1}{4} \end{array}] [\begin{array}{c} 3 \\ - 1 \end{array}]$
1361	Multiplier les matrices	[[-1/2,3/10,3/5],[0,-2/5,1/5],[1/2,-1/10,-1/5]][[22],[-24],[42]]	$[\begin{array}{c} - \frac{1}{2} & \frac{3}{10} & \frac{3}{5} \\ 0 & - \frac{2}{5} & \frac{1}{5} \\ \frac{1}{2} & - \frac{1}{10} & - \frac{1}{5} \end{array}] [\begin{array}{c} 22 \\ - 24 \\ 42 \end{array}]$
1362	Multiplier les matrices	[[-1/2,3/10,3/5],[0,-2/5,1/5],[1/2,-1/10,-1/5]][[32],[-40],[55]]	$[\begin{array}{c} - \frac{1}{2} & \frac{3}{10} & \frac{3}{5} \\ 0 & - \frac{2}{5} & \frac{1}{5} \\ \frac{1}{2} & - \frac{1}{10} & - \frac{1}{5} \end{array}] [\begin{array}{c} 32 \\ - 40 \\ 55 \end{array}]$
1363	Multiplier les matrices	[[-1/2,-1,1/2],[1/2,1,1/2],[0,1,0]][[1,0,1],[0,1,0],[1,2,1]]	$[\begin{array}{c} - \frac{1}{2} & - 1 & \frac{1}{2} \\ \frac{1}{2} & 1 & \frac{1}{2} \\ 0 & 1 & 0 \end{array}] [\begin{array}{c} 1 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 2 & 1 \end{array}]$
1364	Multiplier les matrices	[[1,2],[0,1]][[1,1],[0,1]]	$[\begin{array}{c} 1 & 2 \\ 0 & 1 \end{array}] [\begin{array}{c} 1 & 1 \\ 0 & 1 \end{array}]$
1365	Multiplier les matrices	[[1,-2],[0,1]][[-2,0],[-2,-2]]	$[\begin{array}{c} 1 & - 2 \\ 0 & 1 \end{array}] [\begin{array}{c} - 2 & 0 \\ - 2 & - 2 \end{array}]$
1366	Multiplier les matrices	[[-1,2],[0,3]][[-1,2],[0,3]]	$[\begin{array}{c} - 1 & 2 \\ 0 & 3 \end{array}] [\begin{array}{c} - 1 & 2 \\ 0 & 3 \end{array}]$
1367	Multiplier les matrices	[[1,2],[-1,1]]*[[-3],[3]]	$[\begin{array}{c} 1 & 2 \\ - 1 & 1 \end{array}] \cdot [\begin{array}{c} - 3 \\ 3 \end{array}]$
1368	Multiplier les matrices	[[-1,-2],[1,1]][[2],[3]]	$[\begin{array}{c} - 1 & - 2 \\ 1 & 1 \end{array}] [\begin{array}{c} 2 \\ 3 \end{array}]$
1369	Multiplier les matrices	[[1,2],[-1,3]][[2,0,1],[-1,0,0]]	$[\begin{array}{c} 1 & 2 \\ - 1 & 3 \end{array}] [\begin{array}{c} 2 & 0 & 1 \\ - 1 & 0 & 0 \end{array}]$
1370	Multiplier les matrices	[[1,-2],[2,-3]][[1,-2],[2,-3]]	$[\begin{array}{c} 1 & - 2 \\ 2 & - 3 \end{array}] [\begin{array}{c} 1 & - 2 \\ 2 & - 3 \end{array}]$
1371	Multiplier les matrices	[[1,2],[2,3]][[81,2],[162,3]]	$[\begin{array}{c} 1 & 2 \\ 2 & 3 \end{array}] [\begin{array}{c} 81 & 2 \\ 162 & 3 \end{array}]$
1372	Multiplier les matrices	[[1,2],[3,2]][[c],[-c]]	$[\begin{array}{c} 1 & 2 \\ 3 & 2 \end{array}] [\begin{array}{c} c \\ - c \end{array}]$
1373	Multiplier les matrices	[[1,2],[3,4]]*[[4,3],[2,1]]	$[\begin{array}{c} 1 & 2 \\ 3 & 4 \end{array}] \cdot [\begin{array}{c} 4 & 3 \\ 2 & 1 \end{array}]$
1374	Multiplier les matrices	[[1,2],[3,4]][[1,2,3],[4,5,6]]	$[\begin{array}{c} 1 & 2 \\ 3 & 4 \end{array}] [\begin{array}{c} 1 & 2 & 3 \\ 4 & 5 & 6 \end{array}]$
1375	Multiplier les matrices	[[1,2],[-3,4]][[2],[3]]	$[\begin{array}{c} 1 & 2 \\ - 3 & 4 \end{array}] [\begin{array}{c} 2 \\ 3 \end{array}]$
1376	Multiplier les matrices	[[1,2],[3,5]][[1,1,1],[3,6,9]]	$[\begin{array}{c} 1 & 2 \\ 3 & 5 \end{array}] [\begin{array}{c} 1 & 1 & 1 \\ 3 & 6 & 9 \end{array}]$
1377	Multiplier les matrices	[[1,2],[4,3]]*[[4,2],[3,1]]	$[\begin{array}{c} 1 & 2 \\ 4 & 3 \end{array}] \cdot [\begin{array}{c} 4 & 2 \\ 3 & 1 \end{array}]$
1378	Multiplier les matrices	[[1,2],[4,7]][[16,2],[64,7]][[-7,2],[4,-1]]	$[\begin{array}{c} 1 & 2 \\ 4 & 7 \end{array}] \cdot [\begin{array}{c} 16 & 2 \\ 64 & 7 \end{array}] \cdot [\begin{array}{c} - 7 & 2 \\ 4 & - 1 \end{array}]$
1379	Multiplier les matrices	[[1,2],[5,6]]*[[3,4],[7,8]]	$[\begin{array}{c} 1 & 2 \\ 5 & 6 \end{array}] \cdot [\begin{array}{c} 3 & 4 \\ 7 & 8 \end{array}]$
1380	Multiplier les matrices	[[1,2],[x+y,4],[7,2y]][[z,2],[9,4],[7,8]]	$[\begin{array}{c} 1 & 2 \\ x + y & 4 \\ 7 & 2 y \end{array}] [\begin{array}{c} z & 2 \\ 9 & 4 \\ 7 & 8 \end{array}]$
1381	Multiplier les matrices	[[1,3,0],[1,k,1],[0,3,1]][[m],[-2],[3]]	$[\begin{array}{c} 1 & 3 & 0 \\ 1 & k & 1 \\ 0 & 3 & 1 \end{array}] [\begin{array}{c} m \\ - 2 \\ 3 \end{array}]$
1382	Multiplier les matrices	[[1,3,5],[-1,2,4]][[1,-1],[3,2],[5,4]]	$[\begin{array}{c} 1 & 3 & 5 \\ - 1 & 2 & 4 \end{array}] [\begin{array}{c} 1 & - 1 \\ 3 & 2 \\ 5 & 4 \end{array}]$
1383	Multiplier les matrices	[[1,3],[1,-1],[1,1]][[9],[-3]]	$[\begin{array}{c} 1 & 3 \\ 1 & - 1 \\ 1 & 1 \end{array}] [\begin{array}{c} 9 \\ - 3 \end{array}]$
1384	Multiplier les matrices	[[1,3],[-1,2]][[-2,-4,-6],[0,-2,2]]	$[\begin{array}{c} 1 & 3 \\ - 1 & 2 \end{array}] [\begin{array}{c} - 2 & - 4 & - 6 \\ 0 & - 2 & 2 \end{array}]$
1385	Multiplier les matrices	[[-1,3],[10,1],[6,1],[5,1]][[9,-7,10,9],[2,6,10,7]]	$[\begin{array}{c} - 1 & 3 \\ 10 & 1 \\ 6 & 1 \\ 5 & 1 \end{array}] [\begin{array}{c} 9 & - 7 & 10 & 9 \\ 2 & 6 & 10 & 7 \end{array}]$
1386	Multiplier les matrices	[[1,3],[2,1]][[4,7],[18,18]]	$[\begin{array}{c} 1 & 3 \\ 2 & 1 \end{array}] [\begin{array}{c} 4 & 7 \\ 18 & 18 \end{array}]$
1387	Multiplier les matrices	[[1,3],[2,4]][[3,-2],[1,-1]]	$[\begin{array}{c} 1 & 3 \\ 2 & 4 \end{array}] [\begin{array}{c} 3 & - 2 \\ 1 & - 1 \end{array}]$
1388	Multiplier les matrices	[[1,3],[-2,4],[1,6]][[0,-1,0],[2,0,4],[7,-5,8]]	$[\begin{array}{c} 1 & 3 \\ - 2 & 4 \\ 1 & 6 \end{array}] [\begin{array}{c} 0 & - 1 & 0 \\ 2 & 0 & 4 \\ 7 & - 5 & 8 \end{array}]$
1389	Multiplier les matrices	[[1,3],[4,1],[2,5]]*[[3,-1,1],[0,2,1]]	$[\begin{array}{c} 1 & 3 \\ 4 & 1 \\ 2 & 5 \end{array}] \cdot [\begin{array}{c} 3 & - 1 & 1 \\ 0 & 2 & 1 \end{array}]$
1390	Multiplier les matrices	[[1,3],[4,5]][[6,7],[77,9]]	$[\begin{array}{c} 1 & 3 \\ 4 & 5 \end{array}] [\begin{array}{c} 6 & 7 \\ 77 & 9 \end{array}]$
1391	Multiplier les matrices	[[1,-4,0],[0,3,-1],[-2,6,1]][[7],[1],[9]]	$[\begin{array}{c} 1 & - 4 & 0 \\ 0 & 3 & - 1 \\ - 2 & 6 & 1 \end{array}] [\begin{array}{c} 7 \\ 1 \\ 9 \end{array}]$
1392	Multiplier les matrices	[[-1,4,2],[0,13,10],[0,0,1]]*[[1],[3],[2]]	$[\begin{array}{c} - 1 & 4 & 2 \\ 0 & 13 & 10 \\ 0 & 0 & 1 \end{array}] \cdot [\begin{array}{c} 1 \\ 3 \\ 2 \end{array}]$
1393	Multiplier les matrices	[[1,4,6],[-2,3,5],[1,0,4]][[2,-3,5],[1,0,6],[2,3,1]]	$[\begin{array}{c} 1 & 4 & 6 \\ - 2 & 3 & 5 \\ 1 & 0 & 4 \end{array}] [\begin{array}{c} 2 & - 3 & 5 \\ 1 & 0 & 6 \\ 2 & 3 & 1 \end{array}]$
1394	Multiplier les matrices	[[1,-4],[0,1]][[a,b,c],[d,e,f]]	$[\begin{array}{c} 1 & - 4 \\ 0 & 1 \end{array}] [\begin{array}{c} a & b & c \\ d & e & f \end{array}]$
1395	Multiplier les matrices	[[1,4],[1,-1],[1,1]][[6],[-1]]	$[\begin{array}{c} 1 & 4 \\ 1 & - 1 \\ 1 & 1 \end{array}] [\begin{array}{c} 6 \\ - 1 \end{array}]$
1396	Multiplier les matrices	[[1,4],[-2,3],[1,-2]]*[[w,x],[y,z]]	$[\begin{array}{c} 1 & 4 \\ - 2 & 3 \\ 1 & - 2 \end{array}] \cdot [\begin{array}{c} w & x \\ y & z \end{array}]$
1397	Multiplier les matrices	[[1,4],[3,2]]*[[-1/5,2/5],[3/10,-1/10]]	$[\begin{array}{c} 1 & 4 \\ 3 & 2 \end{array}] \cdot [\begin{array}{c} - \frac{1}{5} & \frac{2}{5} \\ \frac{3}{10} & - \frac{1}{10} \end{array}]$
1398	Multiplier les matrices	[[1,5,0],[0,9,0],[0,7,1]]*[[1,0,0],[5,9,7],[0,0,1]]	$[\begin{array}{c} 1 & 5 & 0 \\ 0 & 9 & 0 \\ 0 & 7 & 1 \end{array}] \cdot [\begin{array}{c} 1 & 0 & 0 \\ 5 & 9 & 7 \\ 0 & 0 & 1 \end{array}]$
1399	Multiplier les matrices	[[1,-5,0],[-2,3,3]][[-3,4],[0,1],[-1,1]]	$[\begin{array}{c} 1 & - 5 & 0 \\ - 2 & 3 & 3 \end{array}] [\begin{array}{c} - 3 & 4 \\ 0 & 1 \\ - 1 & 1 \end{array}]$
1400	Multiplier les matrices	[[1,5,0],[5,3,6],[0,6,2]][[a],[b],[d]]	$[\begin{array}{c} 1 & 5 & 0 \\ 5 & 3 & 6 \\ 0 & 6 & 2 \end{array}] [\begin{array}{c} a \\ b \\ d \end{array}]$