Mister Exam

Derivative of ((1\4)sin²(2x))

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
   2     
sin (2*x)
---------
    4    
$$\frac{\sin^{2}{\left(2 x \right)}}{4}$$
sin(2*x)^2/4
Detail solution
  1. The derivative of a constant times a function is the constant times the derivative of the function.

    1. Let .

    2. Apply the power rule: goes to

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

      1. Let .

      2. The derivative of sine is cosine:

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

        1. 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 of the chain rule is:

      The result of the chain rule is:

    So, the result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
cos(2*x)*sin(2*x)
$$\sin{\left(2 x \right)} \cos{\left(2 x \right)}$$
The second derivative [src]
  /   2           2     \
2*\cos (2*x) - sin (2*x)/
$$2 \left(- \sin^{2}{\left(2 x \right)} + \cos^{2}{\left(2 x \right)}\right)$$
The third derivative [src]
-16*cos(2*x)*sin(2*x)
$$- 16 \sin{\left(2 x \right)} \cos{\left(2 x \right)}$$