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Differentiate the functions given in Exe...

Differentiate the functions given in Exercises 1 to 11 w.r.t. x.
`cos x. cos 2x. Cos 3x`.

Text Solution

Verified by Experts

The correct Answer is:
`-cos x cos 2x cos 3x [tan x +2 tan 2x+3 tan 3x]`
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