Mister Exam

Derivative of 2x^2-1

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
   2    
2*x  - 1
2x212 x^{2} - 1
d /   2    \
--\2*x  - 1/
dx          
ddx(2x21)\frac{d}{d x} \left(2 x^{2} - 1\right)
Detail solution
  1. Differentiate 2x212 x^{2} - 1 term by term:

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

      1. Apply the power rule: x2x^{2} goes to 2x2 x

      So, the result is: 4x4 x

    2. The derivative of the constant (1)1\left(-1\right) 1 is zero.

    The result is: 4x4 x


The answer is:

4x4 x

The graph
02468-8-6-4-2-1010-250250
The first derivative [src]
4*x
4x4 x
The second derivative [src]
4
44
The third derivative [src]
0
00
The graph
Derivative of 2x^2-1