How to Simplify the Derivative of a Cosine-Sine Product

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SUMMARY

The derivative of the function F(x) = cos(x) * sin(5x² + 7) is calculated using the product rule, resulting in the expression -sin(x) * sin(5x² + 7) + (10x) * cos(x) * cos(5x² + 7). The discussion emphasizes the application of the product rule along with the chain rule and power rule for differentiation. Simplification of the resulting expression is deemed minimal, as no further reduction is necessary or possible.

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  • Familiarity with the chain rule for differentiation
  • Knowledge of trigonometric functions and their derivatives
  • Ability to apply the power rule in calculus
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Homework Statement



Find the derivative:

F(x)= cos (x)* sin(5x^2 +7)

Homework Equations





The Attempt at a Solution



I used the power rule and the chain rule and wound up with this: but i don't know how to simplify it...

= -sin(x)*sin(5x^2+7)+(10x)*(cos x)*(cos (5x^2+7)
 
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n.a.s.h said:

Homework Statement



Find the derivative:

F(x)= cos (x)* sin(5x^2 +7)

Homework Equations





The Attempt at a Solution



I used the power rule and the chain rule and wound up with this: but i don't know how to simplify it...

= -sin(x)*sin(5x^2+7)+(10x)*(cos x)*(cos (5x^2+7)
You also used the product rule.

I don't see much that you can do to simplify this.
 
n.a.s.h said:

Homework Statement



Find the derivative:

F(x)= cos (x)* sin(5x^2 +7)

Homework Equations





The Attempt at a Solution



I used the power rule and the chain rule and wound up with this: but i don't know how to simplify it...

= -sin(x)*sin(5x^2+7)+(10x)*(cos x)*(cos (5x^2+7)

yeah sorry i meant product rule
 

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