/ k - 1\ | -----| | 2*k | 2 | /p\ | u - r + -----*|1 - |-| |*c k - 1 \ \r/ /
u - r + ((2/(k - 1))*(1 - (p/r)^((k - 1)/((2*k)))))*c
Differentiate term by term:
The derivative of the constant is zero.
The derivative of a constant times a function is the constant times the derivative of the function.
The derivative of a constant times a function is the constant times the derivative of the function.
Differentiate term by term:
The derivative of the constant is zero.
The derivative of a constant times a function is the constant times the derivative of the function.
Let .
Apply the power rule: goes to
Then, apply the chain rule. Multiply by :
The derivative of a constant times a function is the constant times the derivative of the function.
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:
Now simplify:
The answer is:
k - 1 ----- 2*k /p\ -c*|-| \r/ ------------ k*p
-1 + k ------ 2*k /p\ / -1 + k\ c*|-| *|1 - ------| \r/ \ 2*k / ------------------------ 2 k*p
-1 + k ------ 2*k / 2 \ /p\ | (-1 + k) 3*(-1 + k)| c*|-| *|-2 - --------- + ----------| \r/ | 2 2*k | \ 4*k / ----------------------------------------- 3 k*p