What is the derivative of cos(x+x*sin(x)) ?

The derivative of cos(x+x*sin(x)) is xcos(x)

What is the first derivative of cos(x+x*sin(x)) ?

The first derivative of cos(x+x*sin(x)) is xcos(x)

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\frac{d}{d x} (cos (x) + x \cdot sin (x))

x cos (x)

Solution steps

\frac{d}{d x} (cos (x) + x sin (x))

Apply the Sum/Difference Rule:

(f \pm g)^{'} = f^{'} \pm g^{'}

= \frac{d}{d x} (cos (x)) + \frac{d}{d x} (x sin (x))

\frac{d}{d x} (cos (x)) = - sin (x)

\frac{d}{d x} (x sin (x)) = sin (x) + x cos (x)

= - sin (x) + sin (x) + x cos (x)

Simplify

= x cos (x)

What is the derivative of cos(x+x*sin(x)) ?
The derivative of cos(x+x*sin(x)) is xcos(x)
What is the first derivative of cos(x+x*sin(x)) ?
The first derivative of cos(x+x*sin(x)) is xcos(x)