Mathematics
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OpenStudy (anonymous):
∫(dx)/[x/(x^2-1)^2],solve using partial fraction
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OpenStudy (anonymous):
can jus tell me the final ans.
OpenStudy (anonymous):
jimmy.r u solving the qn?
OpenStudy (anonymous):
i'm trying - i'm a bit rusty at these - i,m consulting the text book!!
OpenStudy (anonymous):
so might be a while
OpenStudy (anonymous):
ok.I'll wait
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OpenStudy (anonymous):
jimmy, r u working out the solution?
OpenStudy (anonymous):
ya
OpenStudy (anonymous):
how?
OpenStudy (anonymous):
i've got 4 fractions so 4 unknowns - the algebra is horrendous - there must be an easier way to do this - ill try wolframappha
OpenStudy (anonymous):
ok.
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OpenStudy (anonymous):
but what is ur final ans?
OpenStudy (anonymous):
i've split it up into four fractions so 4 unknowns - very messy - there must be an easier way - i'm checking it out on wolfram alpha
OpenStudy (anonymous):
my messages arent getting thru
OpenStudy (anonymous):
yup,wat jimmy?
OpenStudy (anonymous):
ok. anyone with final ans?
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OpenStudy (anonymous):
i'm trying wolframalpha but its coming up with error messages all the time
OpenStudy (anonymous):
ok
OpenStudy (zarkon):
is this your integral?
∫(dx)/[x/(x^2-1)^2]
\[\int\frac{dx}{\frac{x}{(x^2-1)^2}}\]?
(Why doesn't thins thing like the negative sign??)
OpenStudy (anonymous):
yes,right
OpenStudy (anonymous):
math - i gotta go - sorry i couldn't help
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OpenStudy (anonymous):
ok
OpenStudy (zarkon):
so it can be written \[\int\frac{(x^2-1)^2}{x}dx\]
OpenStudy (anonymous):
no.
OpenStudy (anonymous):
numerator is on e denominator, that means 1 is on e numerator
OpenStudy (anonymous):
denominator has[x[x^{2}-1]^{2}\]
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OpenStudy (zarkon):
\[\int\frac{1}{x(x^2-1)^2}dx\]
OpenStudy (anonymous):
yes ur right!
OpenStudy (zarkon):
ok..give me a min and I'll give you an answer
OpenStudy (anonymous):
ok.
OpenStudy (zarkon):
this is from my ti-nspire
\[\frac{-\left[(x^2-1)\ln|x^2-1|-2(x^2-1)\ln|x|+1\right]}{2(x^2-1)}\]
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OpenStudy (anonymous):
is this ur ans?
OpenStudy (zarkon):
my nspire combines everything..the wolfram answer is nicer looking
OpenStudy (anonymous):
ok. thanks