Mister Exam

Derivative of x-lnx

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
x - log(x)
$$x - \log{\left(x \right)}$$
d             
--(x - log(x))
dx            
$$\frac{d}{d x} \left(x - \log{\left(x \right)}\right)$$
Detail solution
  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. The derivative of is .

      So, the result is:

    The result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
    1
1 - -
    x
$$1 - \frac{1}{x}$$
The second derivative [src]
1 
--
 2
x 
$$\frac{1}{x^{2}}$$
The third derivative [src]
-2 
---
  3
 x 
$$- \frac{2}{x^{3}}$$
The graph
Derivative of x-lnx