# Thread: Prove limit with epsilon-delta definition.

1. ## Prove limit with epsilon-delta definition.

lim x -> 2 sqrt.(4x + 5 ) = sqrt.(13)

i have trouble proving limits with radicals. can anyone please explain clearly the steps?

i know at one point delta = d = min{1, e/8}

i have no idea what that means. and how to use it for the final answer.

2. Originally Posted by NeedHelp18
lim x -> 2 sqrt.(4x + 5 ) = sqrt.(13)

i have trouble proving limits with radicals. can anyone please explain clearly the steps?

i know at one point delta = d = min{1, e/8}

i have no idea what that means. and how to use it for the final answer.
http://www.mathhelpforum.com/math-he...ta-proofs.html