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mpj4
 one year ago
isn't the integral of dx / [x (7x^2  5)^(1/2) ] = 1/a arcsec u/a??
mpj4
 one year ago
isn't the integral of dx / [x (7x^2  5)^(1/2) ] = 1/a arcsec u/a??

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mpj4
 one year ago
Best ResponseYou've already chosen the best response.0I ask because I applied it and I got it wrong.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1looks you forgot to put the absolute value bars

mpj4
 one year ago
Best ResponseYou've already chosen the best response.0forgot to square the a=5 and the integral signs. Sorry, was a bit hasty making it.

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0you can try this substitution: \[\large \sqrt {7{x^2}  5} = \sqrt 7 x + t\] where t is the new variable of integration
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