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(2x+3)/(x+1)

Integral of (2x+3)/(x+1) dx

Limits of integration:

from to
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
  1           
  /           
 |            
 |  2*x + 3   
 |  ------- dx
 |   x + 1    
 |            
/             
0             
$$\int\limits_{0}^{1} \frac{2 x + 3}{x + 1}\, dx$$
Integral((2*x + 3)/(x + 1), (x, 0, 1))
Detail solution
  1. There are multiple ways to do this integral.

    Method #1

    1. Let .

      Then let and substitute :

      1. Let .

        Then let and substitute :

        1. Rewrite the integrand:

        2. Integrate term-by-term:

          1. The integral of a constant is the constant times the variable of integration:

          1. The integral of is .

          The result is:

        Now substitute back in:

      Now substitute back in:

    Method #2

    1. Rewrite the integrand:

    2. Integrate term-by-term:

      1. The integral of a constant is the constant times the variable of integration:

      1. Let .

        Then let and substitute :

        1. The integral of is .

        Now substitute back in:

      The result is:

    Method #3

    1. Rewrite the integrand:

    2. Integrate term-by-term:

      1. The integral of a constant times a function is the constant times the integral of the function:

        1. Rewrite the integrand:

        2. Integrate term-by-term:

          1. The integral of a constant is the constant times the variable of integration:

          1. The integral of a constant times a function is the constant times the integral of the function:

            1. Let .

              Then let and substitute :

              1. The integral of is .

              Now substitute back in:

            So, the result is:

          The result is:

        So, the result is:

      1. The integral of a constant times a function is the constant times the integral of the function:

        1. Let .

          Then let and substitute :

          1. The integral of is .

          Now substitute back in:

        So, the result is:

      The result is:

  2. Add the constant of integration:


The answer is:

The answer (Indefinite) [src]
  /                                       
 |                                        
 | 2*x + 3                                
 | ------- dx = 2 + C + 2*x + log(2 + 2*x)
 |  x + 1                                 
 |                                        
/                                         
$$\int \frac{2 x + 3}{x + 1}\, dx = C + 2 x + \log{\left(2 x + 2 \right)} + 2$$
The graph
The answer [src]
2 + log(2)
$$\log{\left(2 \right)} + 2$$
=
=
2 + log(2)
$$\log{\left(2 \right)} + 2$$
2 + log(2)
Numerical answer [src]
2.69314718055995
2.69314718055995
The graph
Integral of (2x+3)/(x+1) dx

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