Help! Logs :( (1 Viewer)

[nor]

Solve:

lny = -5x^2



Can't remember how to even start!

 

[pLuvia]

That simply means e^(-5x2) = y

 

[darkliight]

Do you mean solve for y?

If so, remember this nifty little rule: e^(ln(x)) = x

Remember to do this to both sides of your equation.

 

[nor]

its solve for x

 

[nor]

sorry, solve for y


What happens after that first step?
I'm so lost

 

[Mountain.Dew]

ummm...its practically impossible to solve for x, since we have the other varibale 'y' floating around...

nor, r u sure that is the right question?

 

[nor]

sorry, solve for y

sorry..

 

[SoulSearcher]

Unless you can give a value for one of those numerals, it is impossible to give a numeric value for either x or y.

 

[Riviet]

Or if you give us another equation involving x's and y's...

You have one equation and two variables, of course you can't solve for either variable. XD