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Derivative of u-r+2/(k-1)*(1-(p/r)**((k-1)/(2*k)))*с

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
              /       k - 1\  
              |       -----|  
              |        2*k |  
          2   |    /p\     |  
u - r + -----*|1 - |-|     |*c
        k - 1 \    \r/     /  
$$c \left(1 - \left(\frac{p}{r}\right)^{\frac{k - 1}{2 k}}\right) \frac{2}{k - 1} + \left(- r + u\right)$$
u - r + ((2/(k - 1))*(1 - (p/r)^((k - 1)/((2*k)))))*c
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. The derivative of a constant times a function is the constant times the derivative of the function.

        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 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:

            So, the result is:

          The result is:

        So, the result is:

      So, the result is:

    The result is:

  2. Now simplify:


The answer is:

The first derivative [src]
      k - 1 
      ----- 
       2*k  
   /p\      
-c*|-|      
   \r/      
------------
    k*p     
$$- \frac{c \left(\frac{p}{r}\right)^{\frac{k - 1}{2 k}}}{k p}$$
The second derivative [src]
     -1 + k             
     ------             
      2*k               
  /p\       /    -1 + k\
c*|-|      *|1 - ------|
  \r/       \     2*k  /
------------------------
             2          
          k*p           
$$\frac{c \left(\frac{p}{r}\right)^{\frac{k - 1}{2 k}} \left(1 - \frac{k - 1}{2 k}\right)}{k p^{2}}$$
The third derivative [src]
     -1 + k                              
     ------                              
      2*k   /             2             \
  /p\       |     (-1 + k)    3*(-1 + k)|
c*|-|      *|-2 - --------- + ----------|
  \r/       |           2        2*k    |
            \        4*k                /
-----------------------------------------
                      3                  
                   k*p                   
$$\frac{c \left(\frac{p}{r}\right)^{\frac{k - 1}{2 k}} \left(-2 + \frac{3 \left(k - 1\right)}{2 k} - \frac{\left(k - 1\right)^{2}}{4 k^{2}}\right)}{k p^{3}}$$