Hello all here is my problem i tired a half angle approach ( and didnt get very far). any hints?
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Originally Posted by bobak Hello all here is my problem i tired a half angle approach ( and didnt get very far). any hints? Hint only? cos^2(X) = 1 -sin^2(X) so, cosX = sqrt[1 -sin^2(X)] cosX = sqrt[(1 +sinX)(1 -sinX)] Further, INT.[sqrt(1 +sinX)]dX = INT.[sqrt(1 +sinX)]*[cosX / cosX] dX
that right ?
Yes. But you have to add the all-impotant "C". = -2sqrt(1 -sinX) +C
Last edited by ticbol; Oct 22nd 2007 at 01:30 PM.
Hello,bobak! Here is my problem: . Multiply by . . We have: . Now let:
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