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Derivative of 5+4cos^2(x)

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

The graph:

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The solution

You have entered [src]
         2   
5 + 4*cos (x)
$$4 \cos^{2}{\left(x \right)} + 5$$
5 + 4*cos(x)^2
Detail solution
  1. Differentiate term by term:

    1. The derivative of the constant is zero.

    2. 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. The derivative of cosine is negative sine:

        The result of the chain rule is:

      So, the result is:

    The result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
-8*cos(x)*sin(x)
$$- 8 \sin{\left(x \right)} \cos{\left(x \right)}$$
The second derivative [src]
  /   2         2   \
8*\sin (x) - cos (x)/
$$8 \left(\sin^{2}{\left(x \right)} - \cos^{2}{\left(x \right)}\right)$$
The third derivative [src]
32*cos(x)*sin(x)
$$32 \sin{\left(x \right)} \cos{\left(x \right)}$$