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January 30, 2015

January 30, 2015

Posted by **britt** on Wednesday, January 5, 2011 at 8:44am.

- calculus -
**britt**, Wednesday, January 5, 2011 at 8:44amit's x=pi.

- calculus -
**Damon**, Wednesday, January 5, 2011 at 10:00amd tan theta/d theta = sec^2 theta

so sec^2 (6 x^2) * 12 x

x = pi so sec (6 x^2) = 1/cos(6pi^2)=1.95

sec^2(6x^2) = 3.82

12 * pi * 3.82 = 144

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