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-(((ctgx)^3)/3)

Derivative of -(((ctgx)^3)/3)

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
    3    
-cot (x) 
---------
    3    
$$- \frac{\cot^{3}{\left(x \right)}}{3}$$
  /    3    \
d |-cot (x) |
--|---------|
dx\    3    /
$$\frac{d}{d x} \left(- \frac{\cot^{3}{\left(x \right)}}{3}\right)$$
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. There are multiple ways to do this derivative.

        Method #1

        1. Rewrite the function to be differentiated:

        2. Let .

        3. Apply the power rule: goes to

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

          1. Rewrite the function to be differentiated:

          2. Apply the quotient rule, which is:

            and .

            To find :

            1. The derivative of sine is cosine:

            To find :

            1. The derivative of cosine is negative sine:

            Now plug in to the quotient rule:

          The result of the chain rule is:

        Method #2

        1. Rewrite the function to be differentiated:

        2. Apply the quotient rule, which is:

          and .

          To find :

          1. The derivative of cosine is negative sine:

          To find :

          1. The derivative of sine is cosine:

          Now plug in to the quotient rule:

      The result of the chain rule is:

    So, the result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
    2    /          2   \ 
-cot (x)*\-3 - 3*cot (x)/ 
--------------------------
            3             
$$- \frac{\left(- 3 \cot^{2}{\left(x \right)} - 3\right) \cot^{2}{\left(x \right)}}{3}$$
The second derivative [src]
   /       2   \ /         2   \       
-2*\1 + cot (x)/*\1 + 2*cot (x)/*cot(x)
$$- 2 \left(\cot^{2}{\left(x \right)} + 1\right) \left(2 \cot^{2}{\left(x \right)} + 1\right) \cot{\left(x \right)}$$
The third derivative [src]
                /             2                                      \
  /       2   \ |/       2   \         4           2    /       2   \|
2*\1 + cot (x)/*\\1 + cot (x)/  + 2*cot (x) + 7*cot (x)*\1 + cot (x)//
$$2 \left(\cot^{2}{\left(x \right)} + 1\right) \left(\left(\cot^{2}{\left(x \right)} + 1\right)^{2} + 7 \left(\cot^{2}{\left(x \right)} + 1\right) \cot^{2}{\left(x \right)} + 2 \cot^{4}{\left(x \right)}\right)$$
The graph
Derivative of -(((ctgx)^3)/3)