ATAR Notes: Forum
VCE Stuff => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematics => Topic started by: Tea.bag on April 16, 2009, 08:23:55 pm
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how do u integrate
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use the process of substitution;
turn u = x^2 +1
And follow on from there
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i cant post whole solution because i cant figure out how you type all the stuff in, but it shud be easy from there on....
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I think everyone's missing the typo'd square root. I imagine it's meant to cover the entire denominator so that complicates things no?
EDIT: Pfft you deleted your post =P
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i think he means

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yeh i couldnt figure out what marshmallow meant, just turn everything inside the square root = u.
So the u equation shud look like
U-1/(U^(1/2))
Can someone tell me how you guys who do those special typing?
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yea..i know all that but what about the
dx = du/2x
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im guessin its something to do with hyperbolic functions?
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yeah teabag
do it in parts
i was discussing it with mao on MSN, he knows latex so he'll be posting the soln
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Let




 + C = \frac{1}{2}\left( \sinh \theta \cosh \theta - \theta \right) + C)
 + C = \frac{x}{2}\sqrt{1+x^2} - \frac{1}{2}\log_e \left( x + \sqrt{x^2 + 1}\right) + C)
apologies for the delay, really rusty on this stuff, messed up negatives and identities everywhere.