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How do you in partial fractions?:
(x^2-1)/(x+1)
Graphing y =:
(x^2-1)/(x+1)
Derivative of:
(x^2-1)/(x+1)
Identical expressions
(x^ two - one)/(x+ one)
(x squared minus 1) divide by (x plus 1)
(x to the power of two minus one) divide by (x plus one)
(x2-1)/(x+1)
x2-1/x+1
(x²-1)/(x+1)
(x to the power of 2-1)/(x+1)
x^2-1/x+1
(x^2-1) divide by (x+1)
(x^2-1)/(x+1)dx
Similar expressions
(x^2+1)/(x+1)
(x^2-1)/(x-1)

Solving integrals/ (x^2-1)/(x+1)

Integral of (x^2-1)/(x+1) dx

The solution

You have entered [src]

  1          
  /          
 |           
 |   2       
 |  x  - 1   
 |  ------ dx
 |  x + 1    
 |           
/            
0

$$\int\limits_{0}^{1} \frac{x^{2} - 1}{x + 1}\, dx$$

Integral((x^2 - 1)/(x + 1), (x, 0, 1))

Detail solution

There are multiple ways to do this integral.
Method #1
1. Rewrite the integrand:
  
  $\frac{x^{2} - 1}{x + 1} = x - 1$
2. Integrate term-by-term:
  1. The integral of $x^{n}$ is $\frac{x^{n + 1}}{n + 1}$ when $n \neq -1$ :
    
    $\int x\, dx = \frac{x^{2}}{2}$
  1. The integral of a constant is the constant times the variable of integration:
    
    $\int \left(-1\right)\, dx = - x$
  The result is: $\frac{x^{2}}{2} - x$
Method #2
1. Rewrite the integrand:
  
  $\frac{x^{2} - 1}{x + 1} = \frac{x^{2}}{x + 1} - \frac{1}{x + 1}$
2. Integrate term-by-term:
  1. Rewrite the integrand:
    
    $\frac{x^{2}}{x + 1} = x - 1 + \frac{1}{x + 1}$
  2. Integrate term-by-term:
    1. The integral of $x^{n}$ is $\frac{x^{n + 1}}{n + 1}$ when $n \neq -1$ :
      
      $\int x\, dx = \frac{x^{2}}{2}$
    1. The integral of a constant is the constant times the variable of integration:
      
      $\int \left(-1\right)\, dx = - x$
    1. Let $u = x + 1$ .
      
      Then let $du = dx$ and substitute $du$ :
      
      $\int \frac{1}{u}\, du$
      
      The integral of $\frac{1}{u}$ is $\log{\left(u \right)}$ .
      
      Now substitute $u$ back in:
      
      $\log{\left(x + 1 \right)}$
    The result is: $\frac{x^{2}}{2} - x + \log{\left(x + 1 \right)}$
  1. The integral of a constant times a function is the constant times the integral of the function:
    
    $\int \left(- \frac{1}{x + 1}\right)\, dx = - \int \frac{1}{x + 1}\, dx$
    1. Let $u = x + 1$ .
      
      Then let $du = dx$ and substitute $du$ :
      
      $\int \frac{1}{u}\, du$
      
      The integral of $\frac{1}{u}$ is $\log{\left(u \right)}$ .
      
      Now substitute $u$ back in:
      
      $\log{\left(x + 1 \right)}$
    So, the result is: $- \log{\left(x + 1 \right)}$
  The result is: $\frac{x^{2}}{2} - x - \log{\left(x + 1 \right)} + \log{\left(x + 1 \right)}$
Now simplify:

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

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

The answer is:

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

The answer (Indefinite) [src]

  /                      
 |                       
 |  2               2    
 | x  - 1          x     
 | ------ dx = C + -- - x
 | x + 1           2     
 |                       
/

$$\int \frac{x^{2} - 1}{x + 1}\, dx = C + \frac{x^{2}}{2} - x$$

Simplify

The graph

Plot the graph f(x)

The answer [src]

-1/2

$$- \frac{1}{2}$$

-1/2

$$- \frac{1}{2}$$

-1/2

Numerical answer [src]

-0.5

-0.5

The graph

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

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Identical expressions

Similar expressions

Integral of (x^2-1)/(x+1) dx

Limits of integration:

The graph:

Piecewise:

The solution

Method #1

Method #2