Hello(adsbygoogle = window.adsbygoogle || []).push({});

I have this problem that I cannot get part of. I need function f^(n)(x) for 1/(5x-1). I have been working it out and I know the denominator is going to be (5x-1) ^ (n+1) but can not figure out the top.

So my question is how do I create a statment that evalutes the following

when x = 1 it equal -5

when x = 2 it equals -5 * -10 == 50

when x = 3 it equals -5 * -10 * -15 == -750

any hints would be great

Thanks

Peter

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Need to find the equation

**Physics Forums | Science Articles, Homework Help, Discussion**