- #1
christian0710
- 409
- 9
This is really strange: If i rewrite a potens function i get a function which should not be possible (it does not give the same values). What did i do wrong?
Y = b*X^a
lnY = ln(b*X^a)
lny = lnb + ln X^a
lnY = lnb + a*lnx
we raise both sides to e
Y = b+ e^(a*lnx)=b+( e^lnx)^a = b + X^a
I think b+ x^a is very diffrent that b*x^a ?
Y = b*X^a
lnY = ln(b*X^a)
lny = lnb + ln X^a
lnY = lnb + a*lnx
we raise both sides to e
Y = b+ e^(a*lnx)=b+( e^lnx)^a = b + X^a
I think b+ x^a is very diffrent that b*x^a ?