Mister Exam

Lang:

Other calculators

How to use it?
Integral of d{x}:
Integral of -y
Integral of x*e^(2*x)*dx
Integral of (1-x^2)^(1/2)
Integral of 1÷(1+x^2)
Graphing y =:
x^2*cos(x)
Derivative of:
x^2*cos(x)
Limit of the function:
x^2*cos(x)
Identical expressions
x^ two *cos(x)
x squared multiply by co sinus of e of (x)
x to the power of two multiply by co sinus of e of (x)
x2*cos(x)
x2*cosx
x²*cos(x)
x to the power of 2*cos(x)
x^2cos(x)
x2cos(x)
x2cosx
x^2cosx
x^2*cos(x)dx
Similar expressions
x^2*cos(x^3)*exp(x^3)
(3-sinx)^2*cos*x
x^2cos(x)dx
x^2cosxdx
x^2*cosx

Solving integrals/ x^2*cos(x)

Integral of x^2*cos(x) dx

The solution

You have entered [src]

  1             
  /             
 |              
 |   2          
 |  x *cos(x) dx
 |              
/               
0

$$\int\limits_{0}^{1} x^{2} \cos{\left(x \right)}\, dx$$

Integral(x^2*cos(x), (x, 0, 1))

Detail solution

Use integration by parts:

$\int \operatorname{u} \operatorname{dv} = \operatorname{u}\operatorname{v} - \int \operatorname{v} \operatorname{du}$

Let $u{\left(x \right)} = x^{2}$ and let $\operatorname{dv}{\left(x \right)} = \cos{\left(x \right)}$ .

Then $\operatorname{du}{\left(x \right)} = 2 x$ .

To find $v{\left(x \right)}$ :
1. The integral of cosine is sine:
  
  $\int \cos{\left(x \right)}\, dx = \sin{\left(x \right)}$
Now evaluate the sub-integral.
Use integration by parts:

$\int \operatorname{u} \operatorname{dv} = \operatorname{u}\operatorname{v} - \int \operatorname{v} \operatorname{du}$

Let $u{\left(x \right)} = 2 x$ and let $\operatorname{dv}{\left(x \right)} = \sin{\left(x \right)}$ .

Then $\operatorname{du}{\left(x \right)} = 2$ .

To find $v{\left(x \right)}$ :
1. The integral of sine is negative cosine:
  
  $\int \sin{\left(x \right)}\, dx = - \cos{\left(x \right)}$
Now evaluate the sub-integral.
The integral of a constant times a function is the constant times the integral of the function:

$\int \left(- 2 \cos{\left(x \right)}\right)\, dx = - 2 \int \cos{\left(x \right)}\, dx$
1. The integral of cosine is sine:
  
  $\int \cos{\left(x \right)}\, dx = \sin{\left(x \right)}$
So, the result is: $- 2 \sin{\left(x \right)}$
Add the constant of integration:

$x^{2} \sin{\left(x \right)} + 2 x \cos{\left(x \right)} - 2 \sin{\left(x \right)}+ \mathrm{constant}$

The answer is:

$x^{2} \sin{\left(x \right)} + 2 x \cos{\left(x \right)} - 2 \sin{\left(x \right)}+ \mathrm{constant}$

The answer (Indefinite) [src]

  /                                                    
 |                                                     
 |  2                             2                    
 | x *cos(x) dx = C - 2*sin(x) + x *sin(x) + 2*x*cos(x)
 |                                                     
/

$$\int x^{2} \cos{\left(x \right)}\, dx = C + x^{2} \sin{\left(x \right)} + 2 x \cos{\left(x \right)} - 2 \sin{\left(x \right)}$$

Simplify

The graph

Plot the graph f(x)

The answer [src]

-sin(1) + 2*cos(1)

$$- \sin{\left(1 \right)} + 2 \cos{\left(1 \right)}$$

-sin(1) + 2*cos(1)

$$- \sin{\left(1 \right)} + 2 \cos{\left(1 \right)}$$

-sin(1) + 2*cos(1)

Numerical answer [src]

0.239133626928383

0.239133626928383

The graph

Use the examples entering the upper and lower limits of integration.

Other calculators

How to use it?

Identical expressions

Similar expressions

Integral of x^2*cos(x) dx

Limits of integration:

The graph:

Piecewise:

The solution