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Mathematics 20 Online
OpenStudy (anonymous):

How do you use l'Hopital's rule when you don't have any equations for the lines, just a graph without numerical distinctions? When, for example, a function is representative of the ratio of two functions on the graph?

OpenStudy (amistre64):

the graph tells you the limits right? Lhoptials rule is for working th enumbers without a graph i thiought

OpenStudy (amistre64):

you can try to match an equation to the graph; by plotting points and wrapping a curve to it; or you can try to work out a suitable equation by loooking that the way the graph behaves at its asymptotes

OpenStudy (anonymous):

I'm not sure. It's a preamble to l'hopital's rule, but we are supposed to use it to find the limits.... I'm not sure these graphs are guessable equations.

OpenStudy (amistre64):

itd help to have apicture to go by ;)

OpenStudy (anonymous):

okay give me a second to scan it

OpenStudy (amistre64):

in essense, a rational expression is controlled by 2 polynomials that fight for control

OpenStudy (anonymous):

it won't let me post the scanned image. but anyways for the one the one function is approaching infinity faster than the other function is approaching negative infinity

OpenStudy (amistre64):

you save the image as a jpeg?

OpenStudy (anonymous):

yes i saved it as a jpeg from the original scan form of a tif

OpenStudy (amistre64):

hmm..... be right back.

OpenStudy (amistre64):

lhopital allows says we can find the limit of certain undeterminate setups by taking the derivative of the top and the bootom, and finding their limits right?

OpenStudy (anonymous):

yes that is true... lim x--> a f(x)/g(x) =f'(x)/g'(x)

OpenStudy (amistre64):

wish i had a pic of that graph :)

OpenStudy (anonymous):

okay i'm trying to do this the difficult way now. i'm downloading the scan to photobucket where it seems to be working

OpenStudy (anonymous):

its part 6

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