February 26, 2017

Homework Help: grouping

Posted by mary on Wednesday, November 19, 2008 at 10:51am.

i am trying to solve for A and B....this question comes from a Differential equations...but this step goes back to basics...


when you group all the sinx and cosx
you get


you get

(A+6B)=0 and (6A-B)=-1<<<<<<<<<

i am having a hard time understanding the second part where i have the <<<< next to it...i mean shouldnt it be =-3 i really don't get that...i got this answer from the back of the book but i am trying to understand it...please help if possible...

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