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January 25, 2015

January 25, 2015

Posted by **Johny** on Thursday, December 1, 2011 at 6:09pm.

A) (sqrt(9+10x^2))/(7+9x)

- calculus -
**MathMate**, Thursday, December 1, 2011 at 6:32pmUse l'hôpital's rule or

divide top and bottom by x and take limits:

Lim (sqrt(9+10x^2)/x) / ((7+9x)/x)

x->∞

=Lim sqrt(9/x^2+10) / (7/x + 9)

x->∞

=sqrt(10)/9

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