- #1

crm08

- 28

- 0

## Homework Statement

Find a formula for f^(n)(x) if f(x) = ln(x-1)

## Homework Equations

## The Attempt at a Solution

Not completely sure what the problem is asking for, any suggestions? Also, another quick question. If I am trying to graph a problem using a ti-89 that shows two tangent lines to the curve y = (ln(x))/x at the points (1,0) and (e,1/e), I found the slope function by taking the derivative, I found the equations of the two lines which are y = x-1 and y = 1/e but I don't know how to tell my calculator to graph "1/e" without it trying to raise e to a power, there is no button that is simply "e". I tried using y = 1/(1+x)^(1/x) but it gave me a bunch of random lines