Use the limit definition to find an equation of a tangent line of f(x)= 1/(x-1) at the given point (2,1)

By "limit definition", I assume you mean the derivative. We have

For and c = 2, we have

The tangent line to (2, 1) has slope -1. Using the point-slope formula, it has equation

y - 1 = - (x - 2)

y = - x + 3

this is a good question! i'll do some research and come back when i have the answer!

2+2 obliviously is 4.