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Numerade Educator

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Problem 1 Easy Difficulty

Evaluate the integral by making the given substitution.

$ \displaystyle \int \cos 2x \, dx $, $ u = 2x $

Answer

$\frac{1}{2} \sin 2 x+C$

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Video Transcript

Okay. We're trying to evaluate the integral. You know that you is gonna be two facts, which means that if two D acts is do you then detox? As do you divide by two. Which means now we can substitute end. So we write 1/2 times integral of co sign you. Do you remember The integral of co sign is sign And now we're at the point we can plug in. What? Us? We have 1/2 sign, two acts crust sea.