Question

limit as x approaches -1 negative side of (sqrt (4x^2 +1))/(x+1) ?

Answer 1

Problem

Answer 2

Look at the attached graph and post what you think the limit from the left as x approaches -1 is.

Answer 3

How can you prove without simply looking at the graph?

Answer 4

And not the squeeze theorem...

Answer 5

Can it be proved using Taylor Series?