Monday

March 30, 2015

March 30, 2015

Posted by **Momo** on Sunday, February 14, 2010 at 1:45pm.

lim {[1/(2+x)]-(1/2)}/x as x->0

lim (e^-x)cos x as x->infinity

...First off, I'm having trouble getting rid of complex fractions. I tried multiplying the whole numerator by [(2+x)/2], but you'd still get 0/undefined answer (the answer in the back of my book is -1/4)

...As for the second one, my guess is zero, since cosine of infinity would eventually reach zero.

(i need more help with the first one rather than the second)

Help please?

Thanks much!

**Answer this Question**

**Related Questions**

Calc. Limits - Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0...

Calculus..more help! - I have a question relating to limits that I solved lim(x...

calc - Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0= +/- ...

Calculus - Find the following limits algebraically or explain why they dont ...

Calc Please Help - Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/...

Calculus I - We're reviewing limits from the previous chapter, but I'm still ...

Pre-cal - Please determine the following limits if they exist. If the limit does...

calculus - Find lim (with x under it) (x^2-1)/x or state that the limit does...

calculus - interval of convergence - infinity of the summation n=0: ((n+2)/(10^n...

math - i need some serious help with limits in pre-calc. here are a few ...