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anonymous

  • 5 years ago

How do I find the derivative of cos^2(x)

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  1. anonymous
    • 5 years ago
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    use the chain rule. that function is the composition of cos(x) and x^2

  2. anonymous
    • 5 years ago
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    thank you

  3. anonymous
    • 5 years ago
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    \[y=\cos^2x\] \[y'=2(cosx)^1\] \[y'=2cosx\]

  4. anonymous
    • 5 years ago
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    -1 fan for corec

  5. anonymous
    • 5 years ago
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    \[y′=2(cosx)1(cosx)'\] \[y′=2 cosx sinx\]

  6. anonymous
    • 5 years ago
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    -2 (both fans for corec and the constant in front of his answer)

  7. anonymous
    • 5 years ago
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    right =) y' = -2 cosx sinx lol

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