Question

i need to use the def. of a limit on (x+1)/(x-1). i know how to do it, but im tryna make sure im not making a simplification error

Answer 1

i have (((x-1)(x+Dx+1)/(x-1)(x+Dx-1)) - ((x+1)(x+Dx-1)/(x-1)(x+Dx-1))/(Dx))

Answer 2

do i just distribute? usually i dont have to deal with 2 term x 3 term distributing

Answer 3

nvm its works out just alot of cancelling

Answer 4

-2/(x-1)^2 right