Posted by **CMM** on Monday, April 4, 2011 at 8:03pm.

Find the value of the definite integral:

int= integral sign

int((x + 2)/(x^(3/2)),x= 16..25)dx

I have no idea how to start this... would I get rid of the fraction?

- Calc, -
**Alex**, Monday, April 4, 2011 at 8:35pm
you do it by converting it to int[x/x^(3/2)+2/x^(3/2)]= int[1/x^(1/2)+2/x^(3/2)]=

int[x^(-1/2)+2*x^(-3/2)]=

[2x^(1/2)-4*x^(-1/2)]x=16...25=

10-4/5-8+1=

11/5

- Calc, -
**CMM**, Monday, April 4, 2011 at 8:55pm
Oops, I should have been more specific. I need to solve it using sums, not antiderivates.

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