Calculus Examples

${(\cosh (3 x) - \sinh (3 x))}^{4}$

Step 1

Use the Binomial Theorem.

$\cosh^{4} (3 x) + 4 \cosh^{3} (3 x) (- \sinh (3 x)) + 6 \cosh^{2} (3 x) {(- \sinh (3 x))}^{2} + 4 \cosh (3 x) {(- \sinh (3 x))}^{3} + {(- \sinh (3 x))}^{4}$

Step 2

Simplify each term.

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Step 2.1

Multiply $- 1$ by $4$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) {(- \sinh (3 x))}^{2} + 4 \cosh (3 x) {(- \sinh (3 x))}^{3} + {(- \sinh (3 x))}^{4}$

Step 2.2

Apply the product rule to $- \sinh (3 x)$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) ({(- 1)}^{2} \sinh^{2} (3 x)) + 4 \cosh (3 x) {(- \sinh (3 x))}^{3} + {(- \sinh (3 x))}^{4}$

Step 2.3

Rewrite using the commutative property of multiplication.

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cdot {(- 1)}^{2} \cosh^{2} (3 x) \sinh^{2} (3 x) + 4 \cosh (3 x) {(- \sinh (3 x))}^{3} + {(- \sinh (3 x))}^{4}$

Step 2.4

Raise $- 1$ to the power of $2$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cdot 1 \cosh^{2} (3 x) \sinh^{2} (3 x) + 4 \cosh (3 x) {(- \sinh (3 x))}^{3} + {(- \sinh (3 x))}^{4}$

Step 2.5

Multiply $6$ by $1$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) + 4 \cosh (3 x) {(- \sinh (3 x))}^{3} + {(- \sinh (3 x))}^{4}$

Step 2.6

Apply the product rule to $- \sinh (3 x)$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) + 4 \cosh (3 x) ({(- 1)}^{3} \sinh^{3} (3 x)) + {(- \sinh (3 x))}^{4}$

Step 2.7

Raise $- 1$ to the power of $3$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) + 4 \cosh (3 x) (- \sinh^{3} (3 x)) + {(- \sinh (3 x))}^{4}$

Step 2.8

Multiply $- 1$ by $4$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) - 4 \cosh (3 x) \sinh^{3} (3 x) + {(- \sinh (3 x))}^{4}$

Step 2.9

Apply the product rule to $- \sinh (3 x)$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) - 4 \cosh (3 x) \sinh^{3} (3 x) + {(- 1)}^{4} \sinh^{4} (3 x)$

Step 2.10

Raise $- 1$ to the power of $4$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) - 4 \cosh (3 x) \sinh^{3} (3 x) + 1 \sinh^{4} (3 x)$

Step 2.11

Multiply $\sinh^{4} (3 x)$ by $1$ .

$\cosh^{4} (3 x) - 4 \cosh^{3} (3 x) \sinh (3 x) + 6 \cosh^{2} (3 x) \sinh^{2} (3 x) - 4 \cosh (3 x) \sinh^{3} (3 x) + \sinh^{4} (3 x)$