基础数学 示例

化简 2.5cd-3.2dc+4.1d^2c-3.5c+5.8d-3d^2c-cd^2
2.5cd-3.2dc+4.1d2c-3.5c+5.8d-3d2c-cd22.5cd3.2dc+4.1d2c3.5c+5.8d3d2ccd2
解题步骤 1
2.5cd2.5cd 中减去 3.2dc3.2dc
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解题步骤 1.1
移动 dd
2.5cd-3.2cd+4.1d2c-3.5c+5.8d-3d2c-cd22.5cd3.2cd+4.1d2c3.5c+5.8d3d2ccd2
解题步骤 1.2
2.5cd2.5cd 中减去 3.2cd3.2cd
-0.7cd+4.1d2c-3.5c+5.8d-3d2c-cd20.7cd+4.1d2c3.5c+5.8d3d2ccd2
-0.7cd+4.1d2c-3.5c+5.8d-3d2c-cd20.7cd+4.1d2c3.5c+5.8d3d2ccd2
解题步骤 2
4.1d2c4.1d2c 中减去 3d2c3d2c
-0.7cd-3.5c+5.8d+1.1d2c-cd20.7cd3.5c+5.8d+1.1d2ccd2
解题步骤 3
1.1d2c1.1d2c 中减去 cd2cd2
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解题步骤 3.1
移动 d2d2
-0.7cd-3.5c+5.8d+1.1cd2-cd20.7cd3.5c+5.8d+1.1cd2cd2
解题步骤 3.2
1.1cd21.1cd2 中减去 cd2cd2
-0.7cd-3.5c+5.8d+0.1cd20.7cd3.5c+5.8d+0.1cd2
-0.7cd-3.5c+5.8d+0.1cd20.7cd3.5c+5.8d+0.1cd2
解题步骤 4
移动 5.8d5.8d
-0.7cd-3.5c+0.1cd2+5.8d0.7cd3.5c+0.1cd2+5.8d
解题步骤 5
移动 -3.5c3.5c
-0.7cd+0.1cd2-3.5c+5.8d0.7cd+0.1cd23.5c+5.8d
解题步骤 6
-0.7cd0.7cd0.1cd20.1cd2 重新排序。
0.1cd2-0.7cd-3.5c+5.8d0.1cd20.7cd3.5c+5.8d
 [x2  12  π  xdx ]  x2  12  π  xdx