First step I did all the factor:
-And then factoring the denominator again I got: ; but I have a question here, and I think it's just because I'm really tired, but can I factor ? I keep thinking but my brain's not working.
-Anyway, I cancelled the from the numerator / denominator and then evaluated the limit using direct substitution and I got zero. My book says that's wrong though. If anyone has a chance to throw me a tip for these two questions I'd really appreciate it!
Thanks Prove It. Apparently, I had bookmarked the wrong answer section without realizing it.
I have another problem to add to this thread though regarding the limit of a trigonometric function.
. My first question is do I use direct substitution again? I know sin of pi/2 is 1, and 4*(pi/2) is 0. I'm trying to think of a trick like bringing the constant 4 out in front of the limit but the answer isn't 4 either. I just want to know the right procedure for future reference.
Oh wait, that's it- 2pi. I was trying to solve it thinking 2pi should be zero. Nevermind! (but still thanks)