x sin(x)*e
d / x\ --\sin(x)*e / dx
Apply the product rule:
f(x)=sin(x)f{\left(x \right)} = \sin{\left(x \right)}f(x)=sin(x); to find ddxf(x)\frac{d}{d x} f{\left(x \right)}dxdf(x):
The derivative of sine is cosine:
g(x)=exg{\left(x \right)} = e^{x}g(x)=ex; to find ddxg(x)\frac{d}{d x} g{\left(x \right)}dxdg(x):
The derivative of exe^{x}ex is itself.
The result is: exsin(x)+excos(x)e^{x} \sin{\left(x \right)} + e^{x} \cos{\left(x \right)}exsin(x)+excos(x)
Now simplify:
The answer is:
x x cos(x)*e + e *sin(x)
x 2*cos(x)*e
x 2*(-sin(x) + cos(x))*e