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# Chain rule

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What did I do wrong?
1. Find f'(x) when f(x)= 5x(sinx + cosx)
2. Find f'(x) when f(x)= ((x^3) + 4x + 4))^2
My answer: 6x^2(x^3 + 4x + 4)
3. Find f'(x) when f(x)= (3x + 8)^-3
4. Find f'(x) when f(x)= Sq root of (5x + 8)
5. Find f'(x) when f(x)= cos(3x + 2)
6. Find f'(x) when f(x)= sin(cos(x^5))

##### Solution Summary

This shows six examples of derivatives using chain rule

##### Solution Preview

Problem:

What did I do wrong?
1. Find f'(x) when f(x)= 5x(sinx + cosx)
2. Find f'(x) when f(x)= ((x^3) + 4x + 4))^2
My answer: 6x^2(x^3 + 4x + 4)
3. Find f'(x) when f(x)= (3x + 8)^-3
4. Find f'(x) when f(x)= Sq root of (5x + 8)
5. Find f'(x) when f(x)= cos(3x + 2)
6. Find f'(x) when f(x)= sin(cos(x^5))

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