inverse functions

[help7244]

solve for y:
ln(y+3)=x^2

i just forget how to solve it but im pretty sure you need the inverselog function...

 

[Loren]

What happens if you use the definition of log?
\(\displaystyle \ln_eN=x >>> e^x = N\)

 

[Mrspi]

solve for y:
ln(y+3)=x^2

i just forget how to solve it but im pretty sure you need the inverselog function...

Change to exponential form.

If ln(y + 3) = x[sup:16yqhw01]2[/sup:16yqhw01], then

y + 3 = e^(x[sup:16yqhw01]2[/sup:16yqhw01])

Now, if you add -3 to both sides, that should give you y by itself on the left side of the equation.