- #1

chewy

- 15

- 0

## Homework Statement

finding the lengths of a line

## Homework Equations

x = (y^3/3) + 1/(4y) from y =1 to y=3

hint:: 1 + (dx/dy)^2 is a perfect square

## The Attempt at a Solution

I found the solution, i did this by just finding the derivative and then putting it into the equation for finding a line and then messing around with it until i could get rid of the sqaure root in the equation, as usual.

what i don't understand is the hint, what is the perfect square part all about?? what does it mean?? how does it help??

thks

jason