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Identical expressions
x*sin(x²)
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Similar expressions
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Solving integrals/ x*sin(x²)

Integral of x*sin(x²) dx

The solution

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  1             
  /             
 |              
 |       / 2\   
 |  x*sin\x / dx
 |              
/               
0

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

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

Detail solution

Let $u = x^{2}$ .

Then let $du = 2 x dx$ and substitute $\frac{du}{2}$ :

$\int \frac{\sin{\left(u \right)}}{4}\, du$
1. The integral of a constant times a function is the constant times the integral of the function:
  
  $\int \frac{\sin{\left(u \right)}}{2}\, du = \frac{\int \sin{\left(u \right)}\, du}{2}$
  1. The integral of sine is negative cosine:
    
    $\int \sin{\left(u \right)}\, du = - \cos{\left(u \right)}$
  So, the result is: $- \frac{\cos{\left(u \right)}}{2}$
Now substitute $u$ back in:

$- \frac{\cos{\left(x^{2} \right)}}{2}$
Add the constant of integration:

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

The answer is:

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

The answer (Indefinite) [src]

  /                          
 |                       / 2\
 |      / 2\          cos\x /
 | x*sin\x / dx = C - -------
 |                       2   
/

$$-{{\cos x^2}\over{2}}$$

Simplify

The graph

Plot the graph f(x)

The answer [src]

1   cos(1)
- - ------
2     2

$${{1}\over{2}}-{{\cos 1}\over{2}}$$

1   cos(1)
- - ------
2     2

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

Simplify

Numerical answer [src]

0.22984884706593

0.22984884706593

The graph

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

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Identical expressions

Similar expressions

Integral of x*sin(x²) dx

Limits of integration:

The graph:

Piecewise:

The solution