Thread: nth derivative

I can't figure this out.
i need the nth derivative.
y=(x^2+x-1)/(x-1)
f'x = (x^2-2*x)/(x-1)^2
f''x = 2/(x-1)^3
f'''x = -6/(x-1)^4
f''''x = 24/(x-1)^5

Originally Posted by alexgo

I can't figure this out.
i need the nth derivative.
y=(x^2+x-1)/(x-1)
f'x = (x^2-2*x)/(x-1)^2
f''x = 2/(x-1)^3
f'''x = -6/(x-1)^4
f''''x = 24/(x-1)^5

Note that .
Thus, appart from the 0th and the 1st derivative, you have