# Find the inflection point of this function

• July 12th 2011, 03:46 AM
jayshizwiz
Find the inflection point of this function
(for some reason I can't work the latex)

f(x) = -3/( $e^{2x}$-4 $e^x$+3)

f'(x) = ( $6e^{2x}$ -12 $e^x$)/ ( $e^{2x}$-4 $e^x$+3)^2

f''(x) = ...... basically, in the numerator I got $t^3 - 3t^2 + t + 3$
• July 12th 2011, 04:36 AM
Siron
Re: Find the inflection point of this function
There is a latex error ...
For calculating the second derivative it can be useful to factorize the denominator so you simplify the fraction.