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Derivative of -(1/3)cos(3x+(pi/6))

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

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The solution

You have entered [src]
    /      pi\ 
-cos|3*x + --| 
    \      6 / 
---------------
       3       
$$- \frac{\cos{\left(3 x + \frac{\pi}{6} \right)}}{3}$$
-cos(3*x + pi/6)/3
Detail solution
  1. The derivative of a constant times a function is the constant times the derivative of the function.

    1. Let .

    2. The derivative of cosine is negative sine:

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

      1. Differentiate 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: goes to

          So, the result is:

        2. The derivative of the constant is zero.

        The result is:

      The result of the chain rule is:

    So, the result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
   /      pi\
sin|3*x + --|
   \      6 /
$$\sin{\left(3 x + \frac{\pi}{6} \right)}$$
The second derivative [src]
     /      pi\
3*cos|3*x + --|
     \      6 /
$$3 \cos{\left(3 x + \frac{\pi}{6} \right)}$$
The third derivative [src]
      /      pi\
-9*sin|3*x + --|
      \      6 /
$$- 9 \sin{\left(3 x + \frac{\pi}{6} \right)}$$