Calculus Examples

$\frac{(9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y}) \cdot 1}{2}$

Step 1

Differentiate using the Quotient Rule which states that $\frac{d}{d y} [\frac{f (y)}{g (y)}]$ is $\frac{g (y) \frac{d}{d y} [f (y)] - f (y) \frac{d}{d y} [g (y)]}{{g (y)}^{2}}$ where $f (y) = (9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y}) \cdot 1$ and $g (y) = 2$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2

Combine fractions.

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Step 2.1

Move $7$ to the left of $x$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{7 \cdot x}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2.2

Move $7$ to the left of $y$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{7 x}{6} \cdot \frac{7 \cdot y}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2.3

Multiply $\frac{7 x}{6}$ by $\frac{7 y}{2}$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{7 x (7 y)}{6 \cdot 2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2.4

Simplify the expression.

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Step 2.4.1

Multiply $7$ by $7$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{49 x y}{6 \cdot 2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2.4.2

Multiply $6$ by $2$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{49 x y}{12}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2.4.3

Move $2$ to the left of $x$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{49 x y}{12}}{\frac{2 \cdot x}{7} \cdot y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 2.5

Combine $\frac{2 x}{7}$ and $y$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{\frac{49 x y}{12}}{\frac{2 x y}{7}} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 3

Rewrite $\frac{\frac{49 x y}{12}}{\frac{2 x y}{7}}$ as a product.

$\frac{2 \frac{d}{d y} [9 \cdot (\frac{49 x y}{12} \cdot \frac{1}{\frac{2 x y}{7}}) \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 4

Multiply by the reciprocal of the fraction to divide by $\frac{2 x y}{7}$ .

$\frac{2 \frac{d}{d y} [9 \cdot (\frac{49 x y}{12} (1 \frac{7}{2 x y})) \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5

Simplify terms.

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Step 5.1

Multiply $\frac{7}{2 x y}$ by $1$ .

$\frac{2 \frac{d}{d y} [9 \cdot (\frac{49 x y}{12} \cdot \frac{7}{2 x y}) \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.2

Multiply $\frac{49 x y}{12}$ by $\frac{7}{2 x y}$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{49 x y \cdot 7}{12 (2 x y)} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.3

Multiply.

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Step 5.3.1

Multiply $7$ by $49$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{343 x y}{12 (2 x y)} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.3.2

Multiply $2$ by $12$ .

$\frac{2 \frac{d}{d y} [9 \cdot \frac{343 x y}{24 (x y)} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.4

Cancel the common factor of $x$ .

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Step 5.4.1

Cancel the common factor.

$\frac{2 \frac{d}{d y} [9 \cdot \frac{343 x y}{24 x y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.4.2

Rewrite the expression.

$\frac{2 \frac{d}{d y} [9 \cdot \frac{343 y}{24 y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.5

Cancel the common factor of $y$ .

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Step 5.5.1

Cancel the common factor.

$\frac{2 \frac{d}{d y} [9 \cdot \frac{343 y}{24 y} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.5.2

Rewrite the expression.

$\frac{2 \frac{d}{d y} [9 \cdot \frac{343}{24} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.6

Combine $9$ and $\frac{343}{24}$ .

$\frac{2 \frac{d}{d y} [\frac{9 \cdot 343}{24} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.7

Multiply $9$ by $343$ .

$\frac{2 \frac{d}{d y} [\frac{3087}{24} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.8

Cancel the common factor of $3087$ and $24$ .

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Step 5.8.1

Factor $3$ out of $3087$ .

$\frac{2 \frac{d}{d y} [\frac{3 (1029)}{24} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.8.2

Cancel the common factors.

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Step 5.8.2.1

Factor $3$ out of $24$ .

$\frac{2 \frac{d}{d y} [\frac{3 \cdot 1029}{3 \cdot 8} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.8.2.2

Cancel the common factor.

$\frac{2 \frac{d}{d y} [\frac{3 \cdot 1029}{3 \cdot 8} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.8.2.3

Rewrite the expression.

$\frac{2 \frac{d}{d y} [\frac{1029}{8} \cdot 1] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 5.9

Multiply $\frac{1029}{8}$ by $1$ .

$\frac{2 \frac{d}{d y} [\frac{1029}{8}] - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 6

Since $\frac{1029}{8}$ is constant with respect to $y$ , the derivative of $\frac{1029}{8}$ with respect to $y$ is $0$ .

$\frac{2 \cdot 0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \frac{d}{d y} [2]}{2^{2}}$

Step 7

Since $2$ is constant with respect to $y$ , the derivative of $2$ with respect to $y$ is $0$ .

$\frac{2 \cdot 0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \cdot 0}{2^{2}}$

Step 8

Simplify.

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Step 8.1

Simplify the numerator.

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Step 8.1.1

Simplify each term.

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Step 8.1.1.1

Multiply $2$ by $0$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7}{6} \cdot \frac{y \cdot 7}{2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.2

Multiply $\frac{x \cdot 7}{6}$ by $\frac{y \cdot 7}{2}$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7 (y \cdot 7)}{6 \cdot 2}}{\frac{x \cdot 2}{7} \cdot y} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.3

Combine $\frac{x \cdot 2}{7}$ and $y$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 7 (y \cdot 7)}{6 \cdot 2}}{\frac{x \cdot 2 y}{7}} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.4

Multiply $7$ by $7$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 49 y}{6 \cdot 2}}{\frac{x \cdot 2 y}{7}} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.5

Multiply $6$ by $2$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{x \cdot 49 y}{12}}{\frac{x \cdot 2 y}{7}} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.6

Move $49$ to the left of $x$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{49 x y}{12}}{\frac{x \cdot 2 y}{7}} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.7

Move $2$ to the left of $x$ .

$\frac{0 - 1 \cdot 9 \cdot \frac{\frac{49 x y}{12}}{\frac{2 x y}{7}} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.8

Multiply $- 1$ by $9$ .

$\frac{0 - 9 \cdot \frac{\frac{49 x y}{12}}{\frac{2 x y}{7}} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.9

Multiply the numerator by the reciprocal of the denominator.

$\frac{0 - 9 \cdot (\frac{49 x y}{12} \cdot \frac{7}{2 x y}) \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.10

Cancel the common factor of $x y$ .

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Step 8.1.1.10.1

Factor $x y$ out of $49 x y$ .

$\frac{0 - 9 \cdot (\frac{x y (49)}{12} \cdot \frac{7}{2 x y}) \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.10.2

Factor $x y$ out of $2 x y$ .

$\frac{0 - 9 \cdot (\frac{x y (49)}{12} \cdot \frac{7}{x y (2)}) \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.10.3

Cancel the common factor.

$\frac{0 - 9 \cdot (\frac{x y \cdot 49}{12} \cdot \frac{7}{x y \cdot 2}) \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.10.4

Rewrite the expression.

$\frac{0 - 9 \cdot (\frac{49}{12} \cdot \frac{7}{2}) \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.11

Multiply $\frac{49}{12}$ by $\frac{7}{2}$ .

$\frac{0 - 9 \cdot \frac{49 \cdot 7}{12 \cdot 2} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.12

Multiply $49$ by $7$ .

$\frac{0 - 9 \cdot \frac{343}{12 \cdot 2} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.13

Multiply $12$ by $2$ .

$\frac{0 - 9 \cdot \frac{343}{24} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.14

Cancel the common factor of $3$ .

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Step 8.1.1.14.1

Factor $3$ out of $- 9$ .

$\frac{0 + 3 (- 3) \cdot \frac{343}{24} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.14.2

Factor $3$ out of $24$ .

$\frac{0 + 3 \cdot - 3 \cdot \frac{343}{3 \cdot 8} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.14.3

Cancel the common factor.

$\frac{0 + 3 \cdot - 3 \cdot \frac{343}{3 \cdot 8} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.14.4

Rewrite the expression.

$\frac{0 - 3 \cdot \frac{343}{8} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.15

Combine $- 3$ and $\frac{343}{8}$ .

$\frac{0 + \frac{- 3 \cdot 343}{8} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.16

Multiply $- 3$ by $343$ .

$\frac{0 + \frac{- 1029}{8} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.17

Move the negative in front of the fraction.

$\frac{0 - \frac{1029}{8} \cdot 1 \cdot 0}{2^{2}}$

Step 8.1.1.18

Multiply $- 1$ by $1$ .

$\frac{0 - \frac{1029}{8} \cdot 0}{2^{2}}$

Step 8.1.1.19

Multiply $- \frac{1029}{8} \cdot 0$ .

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Step 8.1.1.19.1

Multiply $0$ by $- 1$ .

$\frac{0 + 0 (\frac{1029}{8})}{2^{2}}$

Step 8.1.1.19.2

Multiply $0$ by $\frac{1029}{8}$ .

$\frac{0 + 0}{2^{2}}$

Step 8.1.2

Add $0$ and $0$ .

$\frac{0}{2^{2}}$

Step 8.2

Combine terms.

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Step 8.2.1

Raise $2$ to the power of $2$ .

$\frac{0}{4}$

Step 8.2.2

Cancel the common factor of $0$ and $4$ .

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Step 8.2.2.1

Factor $4$ out of $0$ .

$\frac{4 (0)}{4}$

Step 8.2.2.2

Cancel the common factors.

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Step 8.2.2.2.1

Factor $4$ out of $4$ .

$\frac{4 \cdot 0}{4 \cdot 1}$

Step 8.2.2.2.2

Cancel the common factor.

$\frac{4 \cdot 0}{4 \cdot 1}$

Step 8.2.2.2.3

Rewrite the expression.

$\frac{0}{1}$

Step 8.2.2.2.4

Divide $0$ by $1$ .

$0$