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why do you need to isolate x from there ?

I need to express the function in terms of y

Maybe it's just really late....but isn't that already "y"?

...ok i meant in terms of x then whoops

Oh. Ha ha. Made me confused.

basically i need to turn it into a "x=" form instead of "y="

Herrhhh....What grade/course level is this?

I actually need this for a calculus proble, but I'm having a brain fart.

OH..so ln and e^x and all that?

i need to find the radii of the "outer circle" and "inner circle" of the cross section that looks like a donut, so in order to express the radius in terms of the equation, i need it in terms of "x="

Or do you have to do derivatives too?

I'm using integrals because I need to find the volume of a graph rotated around the y axis

why dont you just complete a square

Wait..does that diagram incldue x,y, z planes, or is that just 2D?

completing the square will do it., do you know how to ?

That's the whole problem I'm working on right now.

if you ever need to solve a quadratic just complete a square

in this case you need to solve for x, so complete a square to do it o_o

-I feel really stupid right now lol-

Hey, don't say that, or I'll feel stupid for not remembering anything.

they condition us to grow accustomed to f(x)! f(y) is just as important =[

GOD BLESS YOU HARTNN lol

Thank you everyone, I've got it now :) haha

lol! you too :)

welcome ^_^