# Fundamental theorem of calculus

## Homework Statement

Evaluate each definite integral.

ok I'm not sure how to do the integration sign, but... b=4, a=1 for (5yy^.5)+3y^.5)dy

## The Attempt at a Solution

I'm not really sure what i'm doing wrong.

i integrated...$$5y^2/2*y^(3/2)/(3/2)+3y^(3/2)/(3/2) then i plugged in stuff so...F(b)-F(a)...f(4)-(f1) I got (40*8/3+16)-(5/2*2/3+2) which gave me 357/3...the correct answer is 76 and I have no idea what I'm doing wrong, I've redone this problem 5 times and doublechecked to no avail :-( ## Answers and Replies Related Calculus and Beyond Homework Help News on Phys.org rock.freak667 Homework Helper [tex]\int_1 ^{4}(5yy^\frac{1}{2} + 3y^\frac{1}{2})dy \equiv \int_1 ^{4}(5y^\frac{3}{2} + 3y^\frac{1}{2})dy$$

Remember that y^m * y^n=y^(m+n)

Dick
$$\int_1 ^{4}(5yy^\frac{1}{2} + 3y^\frac{1}{2})dy \equiv \int_1 ^{4}(5y^\frac{3}{2} + 3y^\frac{1}{2})dy$$