Mister Exam

Other calculators


log(x^2+2*x)

Derivative of log(x^2+2*x)

Function f() - derivative -N order at the point
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
   / 2      \
log\x  + 2*x/
$$\log{\left(x^{2} + 2 x \right)}$$
d /   / 2      \\
--\log\x  + 2*x//
dx               
$$\frac{d}{d x} \log{\left(x^{2} + 2 x \right)}$$
Detail solution
  1. Let .

  2. The derivative of is .

  3. Then, apply the chain rule. Multiply by :

    1. Differentiate term by term:

      1. Apply the power rule: goes to

      2. The derivative of a constant times a function is the constant times the derivative of the function.

        1. Apply the power rule: goes to

        So, the result is:

      The result is:

    The result of the chain rule is:

  4. Now simplify:


The answer is:

The graph
The first derivative [src]
2 + 2*x 
--------
 2      
x  + 2*x
$$\frac{2 x + 2}{x^{2} + 2 x}$$
The second derivative [src]
  /             2\
  |    2*(1 + x) |
2*|1 - ----------|
  \    x*(2 + x) /
------------------
    x*(2 + x)     
$$\frac{2 \cdot \left(1 - \frac{2 \left(x + 1\right)^{2}}{x \left(x + 2\right)}\right)}{x \left(x + 2\right)}$$
The third derivative [src]
          /              2\
          |     4*(1 + x) |
4*(1 + x)*|-3 + ----------|
          \     x*(2 + x) /
---------------------------
         2        2        
        x *(2 + x)         
$$\frac{4 \left(-3 + \frac{4 \left(x + 1\right)^{2}}{x \left(x + 2\right)}\right) \left(x + 1\right)}{x^{2} \left(x + 2\right)^{2}}$$
The graph
Derivative of log(x^2+2*x)