Posted by Tom on Monday, January 28, 2013 at 11:22am.
find the derivative of:
g(x) = interal(a=7x, b=6x) (u+5)/(u5) du
Hint:
interal(a=7x, b=6x) (u+5)/(u5) du
= interal(a=0, b=6x) (u+5)/(u5) du + interal(a=7x, b=0) (u+5)/(u5) du

calculus  Tom, Monday, January 28, 2013 at 11:23am
it's integral, not interal, sorry for the mistake

calculus  Steve, Monday, January 28, 2013 at 11:39am
Using Leibnitz's integral rule,
d/dx ∫[7x,6x] (u+5)/(u5) du
= 6*(6x+5)/(6x5)  7*(7x+5)/(7x5)
= 60/(6x5)  70/(7x5)  1

calculus  Tom, Monday, January 28, 2013 at 7:11pm
Thank Steve. But how do you get 60 or 70?
or the 1?
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