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y=4sin^4*(x/4)

Derivative of y=4sin^4*(x/4)

Function f() - derivative -N order at the point
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The graph:

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The solution

You have entered [src]
     4/x\
4*sin |-|
      \4/
4sin4(x4)4 \sin^{4}{\left(\frac{x}{4} \right)}
d /     4/x\\
--|4*sin |-||
dx\      \4//
ddx4sin4(x4)\frac{d}{d x} 4 \sin^{4}{\left(\frac{x}{4} \right)}
Detail solution
  1. The derivative of a constant times a function is the constant times the derivative of the function.

    1. Let u=sin(x4)u = \sin{\left(\frac{x}{4} \right)}.

    2. Apply the power rule: u4u^{4} goes to 4u34 u^{3}

    3. Then, apply the chain rule. Multiply by ddxsin(x4)\frac{d}{d x} \sin{\left(\frac{x}{4} \right)}:

      1. Let u=x4u = \frac{x}{4}.

      2. The derivative of sine is cosine:

        ddusin(u)=cos(u)\frac{d}{d u} \sin{\left(u \right)} = \cos{\left(u \right)}

      3. Then, apply the chain rule. Multiply by ddxx4\frac{d}{d x} \frac{x}{4}:

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

          1. Apply the power rule: xx goes to 11

          So, the result is: 14\frac{1}{4}

        The result of the chain rule is:

        cos(x4)4\frac{\cos{\left(\frac{x}{4} \right)}}{4}

      The result of the chain rule is:

      sin3(x4)cos(x4)\sin^{3}{\left(\frac{x}{4} \right)} \cos{\left(\frac{x}{4} \right)}

    So, the result is: 4sin3(x4)cos(x4)4 \sin^{3}{\left(\frac{x}{4} \right)} \cos{\left(\frac{x}{4} \right)}

  2. Now simplify:

    4sin3(x4)cos(x4)4 \sin^{3}{\left(\frac{x}{4} \right)} \cos{\left(\frac{x}{4} \right)}


The answer is:

4sin3(x4)cos(x4)4 \sin^{3}{\left(\frac{x}{4} \right)} \cos{\left(\frac{x}{4} \right)}

The graph
02468-8-6-4-2-10105-5
The first derivative [src]
     3/x\    /x\
4*sin |-|*cos|-|
      \4/    \4/
4sin3(x4)cos(x4)4 \sin^{3}{\left(\frac{x}{4} \right)} \cos{\left(\frac{x}{4} \right)}
The second derivative [src]
    2/x\ /   2/x\        2/x\\
-sin |-|*|sin |-| - 3*cos |-||
     \4/ \    \4/         \4//
(sin2(x4)3cos2(x4))sin2(x4)- \left(\sin^{2}{\left(\frac{x}{4} \right)} - 3 \cos^{2}{\left(\frac{x}{4} \right)}\right) \sin^{2}{\left(\frac{x}{4} \right)}
The third derivative [src]
 /       2/x\        2/x\\    /x\    /x\ 
-|- 3*cos |-| + 5*sin |-||*cos|-|*sin|-| 
 \        \4/         \4//    \4/    \4/ 
-----------------------------------------
                    2                    
(5sin2(x4)3cos2(x4))sin(x4)cos(x4)2- \frac{\left(5 \sin^{2}{\left(\frac{x}{4} \right)} - 3 \cos^{2}{\left(\frac{x}{4} \right)}\right) \sin{\left(\frac{x}{4} \right)} \cos{\left(\frac{x}{4} \right)}}{2}
The graph
Derivative of y=4sin^4*(x/4)