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ana111790
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Homework Statement
Calculate the following:
[PLAIN]http://img852.imageshack.us/img852/5580/integraltocalculate.jpg [Broken]
Homework Equations
u substitution where: u= (1-r/R); du = -1/R dr
The Attempt at a Solution
= umax*INT(-R*u1/7 du)
= -umax*R*(7/8)u8/7 evaluated over 0,R
= -(7/8)*R*umax [(1- R/R)8/7 - (1- 0/R)8/7]
* equals 0
**equals 1
= (7/8)*R*umax
The answer at the end of the book says it should come out to be (49/60)*Umax (no R in the term)
Can anyone help me understand what I am doing wrong?
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