Limits

[elcatracho]

Hey I had some questions on Limits and I think i understand but it seems to easy so I don't know if I had an error anywhere or not. I have two questions and I would like to know if the answer that I got was right or if I did indeed make some error somewhere.

find the Limit as x approaces 1 from the left.
(sqaure root of (1+x))/(4+4x) For this one i got the limit to be .177 apox

the next question was. Limit as x get closer to 2 from the left

(x^2+1)(int(x))/(3x-1)^2 for this one i got .4 apox

I would be really grateful if someone took the time to check these for me if they are right than i'm on the right track but if they are wrong.... ohh boy Thanks

 

[stapel]

1) lim_x->1-sqrt(1 + x)/(4(1 + x))

Since there is no discontinuity at x = 1, you can just evaluate: f(1) = sqrt(2)/8, which is close to what you got.

2) What is the "int()" function? Is this an "integral"? If so, what are the limits of integration?

Eliz.