ap calculus - limits, adlfjadsf |
| *stephinika* |
 Oct 10 2005, 05:18 PM
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yeah i've redone this question a few times and i bet its some stupid mistake but its driving me nuts...
anyone that can help?  lim (as x approaches 4) (1/rootx - 1/2)/x-4 i keep on getting either a 0 in the numerator or denominator and its driving me crazy. the first thing i did was simplify the numerator to (2-rootx)/2rootx then multiplied by the conjugate of 2+rootx leaving me with (4-x)/(4rootx+2x). then i multiplied the conjugate again of 4root-2x and after some simplification i ended up with [(4rootx-2x)/4x]/x-4 i then multipied by the reciprocal to do the division but i ended up with {4rootx-2x)/4x(x-4) now what? (did that make any sense?) edit.// i need more help...haha i'm so stuck, my brain isn't working. here:find the limit: lim (as x approaches 2) of (root(6-x) - 2)/(root(3-x)-1) help? and theres two more...trig limits. lim (as x approaches 0) of (2sinx - sin2x)/xcosx AND lim (as x approaches 0) of (sinx)/(x + sinx) ugh. my brain is hurting. this is what happens when you procrastinate and forget all you learned in class almost a weekago....
This post has been edited by stephinika: Oct 10 2005, 09:51 PM |
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| *stephinika* |
Oct 10 2005, 09:50 PM
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#2
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linda...
 thanks sooo much. really. if anyone can still help on the last, i'll just leave this open for now...so yah.
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Posts in this topic
stephinika ap calculus - limits Oct 10 2005, 05:18 PM
silver rain Hmm, ok yay limits.
OK, I don't think you need... Oct 10 2005, 05:42 PM stephinika omg ilu. haha thanks, it was driving me nuts.
c... Oct 10 2005, 05:44 PM silver rain Hah, I actually had that first problem on my homew... Oct 10 2005, 08:59 PM
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