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Author Topic: Random Q's for exam...  (Read 5530 times)  Share 

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stonecold

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Random Q's for exam...
« on: November 04, 2010, 04:06:14 pm »
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Do we need to be able to integrate questions such as the following by hand?







Or only linear denominators?
« Last Edit: November 04, 2010, 04:29:35 pm by stonecold »
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superflya

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Re: Antidifferentiating help
« Reply #1 on: November 04, 2010, 04:07:41 pm »
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nope.
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stonecold

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Re: Antidifferentiating help
« Reply #2 on: November 04, 2010, 04:09:02 pm »
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legend.  and if it is non linear function raised to a power in the numerator, then you have to expand yeah?
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superflya

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Re: Antidifferentiating help
« Reply #3 on: November 04, 2010, 04:10:43 pm »
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as in something like this ?? then yea expand.
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stonecold

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Re: Antidifferentiating help
« Reply #4 on: November 04, 2010, 04:12:42 pm »
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thanks.  and one more thing.  it's in ha's book, but should i bother learning how antidiff tan(x) and sec^2(x)  ?

sec^2(x) is simple and easy, but this stuff shouldn't even come up should it?
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superflya

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Re: Antidifferentiating help
« Reply #5 on: November 04, 2010, 04:16:52 pm »
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dont bother, the only circular functions you should know how to integrate are cos(x) and sin(x). tan(x) and things like log can only be integrated in those hence antidiff questions.
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Blakhitman

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Re: Antidifferentiating help
« Reply #6 on: November 04, 2010, 04:22:21 pm »
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Second one is doable.
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stonecold

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Re: Antidifferentiating help
« Reply #7 on: November 04, 2010, 04:23:29 pm »
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sweet.  thanks.  :D

odds of finding the area under a log by finding the inverse and then finding the area under this for the appropriate domain?

and yeah, antidiff of sec^2(x) is easy...
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stonecold

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Re: Random Q's for exam...
« Reply #8 on: November 04, 2010, 04:31:35 pm »
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have decided to rename this thread haha.

say they want the general solution for the assymptotes on a tan graph, you just find the equation of one. then add that to the period multiplied by n, where n is an element of z, and done...

yeah?
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Souljette_93

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Re: Random Q's for exam...
« Reply #9 on: November 04, 2010, 04:35:15 pm »
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Quote from: stonecold on November 04, 2010, 04:31:35 pm
have decided to rename this thread haha.

say they want the general solution for the assymptotes on a tan graph, you just find the equation of one. then add that to the period multiplied by n, where n is an element of z, and done...

yeah?

An asymptote? Wouldn't that be on tan^-1(0)?
Otherwise, yeah, just as n-pi
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stonecold

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Re: Random Q's for exam...
« Reply #10 on: November 04, 2010, 04:47:57 pm »
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Quote from: Souljette_93 on November 04, 2010, 04:35:15 pm
Quote from: stonecold on November 04, 2010, 04:31:35 pm
have decided to rename this thread haha.

say they want the general solution for the assymptotes on a tan graph, you just find the equation of one. then add that to the period multiplied by n, where n is an element of z, and done...

yeah?

An asymptote? Wouldn't that be on tan^-1(0)?
Otherwise, yeah, just as n-pi

lol, i don't get it.  what i mean like is the general solution of asymptotes for say tax(x) is

pi x n + (pi/2)  where n is an element of z...
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Souljette_93

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Re: Random Q's for exam...
« Reply #11 on: November 04, 2010, 04:51:12 pm »
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Quote from: stonecold on November 04, 2010, 04:47:57 pm
Quote from: Souljette_93 on November 04, 2010, 04:35:15 pm
Quote from: stonecold on November 04, 2010, 04:31:35 pm
have decided to rename this thread haha.

say they want the general solution for the assymptotes on a tan graph, you just find the equation of one. then add that to the period multiplied by n, where n is an element of z, and done...

yeah?

An asymptote? Wouldn't that be on tan^-1(0)?
Otherwise, yeah, just as n-pi

lol, i don't get it.  what i mean like is the general solution of asymptotes for say tax(x) is

pi x n + (pi/2)  where n is an element of z...


Sorry i made a mistake before. But yeah that's what i meant. I believe it's correct.
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Ancient Persian Proverb; " I Wept because i had no Shoes, until i saw a man with no feet!"

First they came for the Socialists, and I did not speak out --
Because I was not a Socialist.
Then they came for the Trade Unionists, and I did not speak out --
Because I was not a Trade Unionist.
Then they came for the Jews, and I did not speak out --
Because I was not a Jew.
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-Martin Niemoller, a german pastor

costa94

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Re: Random Q's for exam...
« Reply #12 on: November 04, 2010, 04:52:24 pm »
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^ npi + pi/2 is correct for asymptotes of tan(x)
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kenhung123

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Re: Random Q's for exam...
« Reply #13 on: November 04, 2010, 04:54:11 pm »
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We need need to rationalise denominators and put answers over a common denominator?
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Souljette_93

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Re: Random Q's for exam...
« Reply #14 on: November 04, 2010, 04:55:34 pm »
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Quote from: kenhung123 on November 04, 2010, 04:54:11 pm
We need need to rationalise denominators and put answers over a common denominator?

When doing general solutions? I don't think so, i never do.
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Ancient Persian Proverb; " I Wept because i had no Shoes, until i saw a man with no feet!"

First they came for the Socialists, and I did not speak out --
Because I was not a Socialist.
Then they came for the Trade Unionists, and I did not speak out --
Because I was not a Trade Unionist.
Then they came for the Jews, and I did not speak out --
Because I was not a Jew.
Then they came for me -- and there was no one left to speak for me.
-Martin Niemoller, a german pastor
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