Mister Exam

Lang:

Other calculators

How to use it?
Derivative of:
Derivative of f(x)=5
Derivative of y=x^3-8x^2+10x-4
Derivative of y=3x^3
Derivative of y=(x^3-3)(x^2+4x+1)
Integral of d{x}:
(x^2-3)/(x+1)
Graphing y =:
(x^2-3)/(x+1)
Identical expressions
(x^ two - three)/(x+ one)
(x squared minus 3) divide by (x plus 1)
(x to the power of two minus three) divide by (x plus one)
(x2-3)/(x+1)
x2-3/x+1
(x²-3)/(x+1)
(x to the power of 2-3)/(x+1)
x^2-3/x+1
(x^2-3) divide by (x+1)
Similar expressions
(x^2-3)/(x-1)
(x^2+3)/(x+1)

The derivative of the function/ (x^2-3)/(x+1)

Derivative of (x^2-3)/(x+1)

The solution

You have entered [src]

 2    
x  - 3
------
x + 1

$$\frac{x^{2} - 3}{x + 1}$$

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

Detail solution

Apply the quotient rule, which is:

$\frac{d}{d x} \frac{f{\left(x \right)}}{g{\left(x \right)}} = \frac{- f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}}{g^{2}{\left(x \right)}}$

$f{\left(x \right)} = x^{2} - 3$ and $g{\left(x \right)} = x + 1$ .

To find $\frac{d}{d x} f{\left(x \right)}$ :
1. Differentiate $x^{2} - 3$ term by term:
  1. The derivative of the constant $-3$ is zero.
  2. Apply the power rule: $x^{2}$ goes to $2 x$
  The result is: $2 x$
To find $\frac{d}{d x} g{\left(x \right)}$ :
1. Differentiate $x + 1$ term by term:
  1. The derivative of the constant $1$ is zero.
  2. Apply the power rule: $x$ goes to $1$
  The result is: $1$
Now plug in to the quotient rule:

$\frac{- x^{2} + 2 x \left(x + 1\right) + 3}{\left(x + 1\right)^{2}}$

The answer is:

$\frac{- x^{2} + 2 x \left(x + 1\right) + 3}{\left(x + 1\right)^{2}}$

The graph

Plot the graph f(x)

Plot the graph f'(x)

The first derivative [src]

    2             
   x  - 3     2*x 
- -------- + -----
         2   x + 1
  (x + 1)

$$\frac{2 x}{x + 1} - \frac{x^{2} - 3}{\left(x + 1\right)^{2}}$$

Simplify

The second derivative [src]

  /          2         \
  |    -3 + x      2*x |
2*|1 + -------- - -----|
  |           2   1 + x|
  \    (1 + x)         /
------------------------
         1 + x

$$\frac{2 \left(- \frac{2 x}{x + 1} + 1 + \frac{x^{2} - 3}{\left(x + 1\right)^{2}}\right)}{x + 1}$$

Simplify

The third derivative [src]

  /           2         \
  |     -3 + x      2*x |
6*|-1 - -------- + -----|
  |            2   1 + x|
  \     (1 + x)         /
-------------------------
                2        
         (1 + x)

$$\frac{6 \left(\frac{2 x}{x + 1} - 1 - \frac{x^{2} - 3}{\left(x + 1\right)^{2}}\right)}{\left(x + 1\right)^{2}}$$

Simplify

Other calculators

How to use it?

Identical expressions

Similar expressions

Derivative of (x^2-3)/(x+1)

The graph:

Piecewise:

The solution