81 / | | 1 | --------- dz | 4 ___ | \/ z - 4 | / 0
Integral(1/(z^(1/4) - 4), (z, 0, 81))
Let .
Then let and substitute :
The integral of a constant times a function is the constant times the integral of the function:
Rewrite the integrand:
Integrate term-by-term:
The integral of is when :
The integral of a constant times a function is the constant times the integral of the function:
The integral of is when :
So, the result is:
The integral of a constant is the constant times the variable of integration:
The integral of a constant times a function is the constant times the integral of the function:
Let .
Then let and substitute :
The integral of is .
Now substitute back in:
So, the result is:
The result is:
So, the result is:
Now substitute back in:
Add the constant of integration:
The answer is:
/ | 3/4 | 1 ___ 4 ___ / 4 ___\ 4*z | --------- dz = C + 8*\/ z + 64*\/ z + 256*log\-4 + \/ z / + ------ | 4 ___ 3 | \/ z - 4 | /
81 / | | / 4 ___ | | 1 4 16 16 \/ z | |----- + ----- + ---- + ----------------- for ----- > 1 | |4 ___ ___ 3/4 / 4 ___\ 4 | |\/ z \/ z z 3/4 | \/ z | | | z *|-1 + -----| | | \ 4 / | < dz | | 1 4 16 16 | |----- + ----- + ---- - ---------------- otherwise | |4 ___ ___ 3/4 / 4 ___\ | |\/ z \/ z z 3/4 | \/ z | | | z *|1 - -----| | | \ 4 / | \ | / 0
=
81 / | | / 4 ___ | | 1 4 16 16 \/ z | |----- + ----- + ---- + ----------------- for ----- > 1 | |4 ___ ___ 3/4 / 4 ___\ 4 | |\/ z \/ z z 3/4 | \/ z | | | z *|-1 + -----| | | \ 4 / | < dz | | 1 4 16 16 | |----- + ----- + ---- - ---------------- otherwise | |4 ___ ___ 3/4 / 4 ___\ | |\/ z \/ z z 3/4 | \/ z | | | z *|1 - -----| | | \ 4 / | \ | / 0
Integral(Piecewise((z^(-1/4) + 4/sqrt(z) + 16/z^(3/4) + 16/(z^(3/4)*(-1 + z^(1/4)/4)), z^(1/4)/4 > 1), (z^(-1/4) + 4/sqrt(z) + 16/z^(3/4) - 16/(z^(3/4)*(1 - z^(1/4)/4)), True)), (z, 0, 81))
Use the examples entering the upper and lower limits of integration.