Limits of functions with negative exponents

[alexk307]

Homework Statement

lim h->0 [(11+h)^-1 - 11^-1]/h

Homework Equations

The Attempt at a Solution

I made the numerator into two fractions with the denominator h. After combining the fractions in the numerator I was left with 121 when I put in 0 for h.

 

[Mark44]

Homework Statement

lim h->0 [(11+h)^-1 - 11^-1]/h

Homework Equations

The Attempt at a Solution

I made the numerator into two fractions with the denominator h. After combining the fractions in the numerator I was left with 121 when I put in 0 for h.

You have a sign error. Check your work.