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d2jsp Forums > Off-Topic > General Chat > Homework Help > Whered Did This Mysterious Negative Sign Come From
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#1
Aug 9 2014 10:27pm



after rearranging from 1 to 2 i have no idea where this negative is coming from

i keep getting cx(u+1)/(u-1)^2 = 1 because of this
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#2
Aug 10 2014 08:09am
@ 1: just look at the line above, if you divide

(1- μ^2)dx - (3+ μ)xdμ=0 by (1- μ^2)x you get exactly the line @1 you circled
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#3
Aug 10 2014 04:39pm
it's because (mu-1)*(mu+1) = mu^2-1 and not 1-mu^2
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