Mister Exam

Integral of ctg(3x+5) dx

Limits of integration:

from to
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
  3                
  /                
 |                 
 |  cot(3*x + 5) dx
 |                 
/                  
1                  
$$\int\limits_{1}^{3} \cot{\left(3 x + 5 \right)}\, dx$$
Integral(cot(3*x + 5), (x, 1, 3))
Detail solution
  1. Rewrite the integrand:

  2. There are multiple ways to do this integral.

    Method #1

    1. Let .

      Then let and substitute :

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

        1. The integral of is .

        So, the result is:

      Now substitute back in:

    Method #2

    1. Let .

      Then let and substitute :

      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:

      Now substitute back in:

  3. Now simplify:

  4. Add the constant of integration:


The answer is:

The answer (Indefinite) [src]
  /                                       
 |                       log(sin(3*x + 5))
 | cot(3*x + 5) dx = C + -----------------
 |                               3        
/                                         
$$\int \cot{\left(3 x + 5 \right)}\, dx = C + \frac{\log{\left(\sin{\left(3 x + 5 \right)} \right)}}{3}$$
The graph
Numerical answer [src]
-2.31630560650902
-2.31630560650902

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