differentiate with respect to x y=2sinx+3cos2x

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The differential of sine is cosine and of cosine is -sine. For the differential of sine or cosine of ax where a is a constant, just multiply the result by a.

dy/dx=2cos(x)-6sin(2x).

(See my answer to a similar question about three hours earlier for an explanation of the differentials of the trig functions.)

by Top Rated User (1.2m points)

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