# Separating variables for an equation?

• Mar 28th 2014, 11:54 AM
canyouhelp
Separating variables for an equation?
Did I solve these correctly? Attachment 30546For the first one I couldn't seperate I or III, so I think that's right. For the second I'm pretty sure I separated them right but I'm not totally confident about it.
• Mar 28th 2014, 10:54 PM
hollywood
Re: Separating variables for an equation?
On #6, you still have a function of x on the left-hand side.

- Hollywood
• Mar 29th 2014, 10:39 AM
canyouhelp
Re: Separating variables for an equation?
Quote:

Originally Posted by hollywood
On #6, you still have a function of x on the left-hand side.

- Hollywood

Oh I didn't notice that. Hm, would it be not separable then? Because dividing e^-x from both sides does give me any of those answers, right?
• Mar 30th 2014, 10:04 PM
hollywood
Re: Separating variables for an equation?
If you divide both sides by \$\displaystyle e^{-x}\$ (or multiply by \$\displaystyle e^x\$), you get answer #2.

- Hollywood
• Mar 31st 2014, 05:58 AM
canyouhelp
Re: Separating variables for an equation?
Quote:

Originally Posted by hollywood
If you divide both sides by \$\displaystyle e^{-x}\$ (or multiply by \$\displaystyle e^x\$), you get answer #2.

- Hollywood

Okay. Thanks! I didn't know that was how you divided by e^-x. Good to know! :)