How do i know when to plug limit into my calculator or solve algebraicaly

(Crying) I NEED HELP FINDING LIMITS ALGEBRAICALLY

lim t^3+8/t+2 ^{t}^{-->-2}

Re: I was good at math until i was introduced to limits. PLEASE HELP

Quote:

Originally Posted by

**dusech3** I NEED HELP FINDING LIMITS ALGEBRAIALLY

Post a problem. No mind readers here.

Re: I was good at math until i was introduced to limits. PLEASE HELP

Re: I was good at math until i was introduced to limits. PLEASE HELP

For the first limit, try writing the numerator as the sum of 2 cubes.

For the second, barring the use of L'Hôpital's rule, try writing:

Re: How do i know when to plug limit into my calculator or solve algebraicaly

Quote:

Originally Posted by

**dusech3** (Crying) I NEED HELP FINDING LIMITS ALGEBRAICALLY

lim t^3+8/t+2 t-->-2

The first thing you should try, to find is calculating f(a). That doesn't work for this problem because both numerator and denominator are 0. And that is 0 when t= -2 [b]tells/b] you that it has a factor of t+ 2. That is, for some a and b. What are they?