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Find the derivative of cos 2x​
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4 votes
Find the derivative of cos 2x​

User Mg Bhadurudeen
by
6.8k points

1 Answer

2 votes

Answer:

2sin2x

Explanation:

let u= 2x

du/dx =2

y=cos2x

y=cosu

dy/du =sinu

dy/dx =dy/du × du/dx

dy/dx = sinu × 2

dy/dx =2sinu

but, u=2x

hence dy/dx = 2sin2x

User Gatti
by
6.7k points
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