Author Topic: antidifferentiation help? (Read 579 times) Tweet Share

Yoda · « **on:** September 15, 2013, 09:37:23 pm »

Need help with this question.

Find an antiderivative of cos^2(2x)

Phy124 · « **Reply #1 on:** September 15, 2013, 09:40:38 pm »

$\cos^2(2x) = \frac{1}{2}(1+\cos(4x))$

$\int \frac{1}{2}(1+\cos(4x)) \ dx = \frac{x}{2}+\frac{1}{8}\sin(4x) + C, C\in \mathbb{R}$

edit: *Note: It says "an" antiderivative so you don't actually need the "+ C"

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Author Topic: antidifferentiation help? (Read 579 times) Tweet Share

Yoda

antidifferentiation help?

Phy124

Re: antidifferentiation help?

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