Mister Exam

Derivative of x*sin(x)

Function f() - derivative -N order at the point
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
x*sin(x)
$$x \sin{\left(x \right)}$$
x*sin(x)
Detail solution
  1. Apply the product rule:

    ; to find :

    1. Apply the power rule: goes to

    ; to find :

    1. The derivative of sine is cosine:

    The result is:


The answer is:

The graph
The first derivative [src]
x*cos(x) + sin(x)
$$x \cos{\left(x \right)} + \sin{\left(x \right)}$$
The second derivative [src]
2*cos(x) - x*sin(x)
$$- x \sin{\left(x \right)} + 2 \cos{\left(x \right)}$$
The third derivative [src]
-(3*sin(x) + x*cos(x))
$$- (x \cos{\left(x \right)} + 3 \sin{\left(x \right)})$$
The graph
Derivative of x*sin(x)