Mister Exam

Derivative of (x+4)/(x-1)

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
x + 4
-----
x - 1
$$\frac{x + 4}{x - 1}$$
d /x + 4\
--|-----|
dx\x - 1/
$$\frac{d}{d x} \frac{x + 4}{x - 1}$$
Detail solution
  1. Apply the quotient rule, which is:

    and .

    To find :

    1. Differentiate term by term:

      1. The derivative of the constant is zero.

      2. Apply the power rule: goes to

      The result is:

    To find :

    1. Differentiate term by term:

      1. The derivative of the constant is zero.

      2. Apply the power rule: goes to

      The result is:

    Now plug in to the quotient rule:


The answer is:

The graph
The first derivative [src]
  1      x + 4  
----- - --------
x - 1          2
        (x - 1) 
$$- \frac{x + 4}{\left(x - 1\right)^{2}} + \frac{1}{x - 1}$$
The second derivative [src]
  /     4 + x \
2*|-1 + ------|
  \     -1 + x/
---------------
           2   
   (-1 + x)    
$$\frac{2 \left(-1 + \frac{x + 4}{x - 1}\right)}{\left(x - 1\right)^{2}}$$
The third derivative [src]
  /    4 + x \
6*|1 - ------|
  \    -1 + x/
--------------
          3   
  (-1 + x)    
$$\frac{6 \cdot \left(1 - \frac{x + 4}{x - 1}\right)}{\left(x - 1\right)^{3}}$$
The graph
Derivative of (x+4)/(x-1)