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January 30, 2015

January 30, 2015

Posted by **Farva** on Monday, November 29, 2010 at 11:18am.

- Calculus -
**Reiny**, Monday, November 29, 2010 at 4:41pmYou need the

integral [cosx]dx from0 to c = integral [cosx]dx from c to π/2

sinc = sin π/2 - sinc

2sinc = sin π/2

sinc = 1/2

c = π/6

Why are you supposed to "guess" ?

- Calculus -
**Farva**, Thursday, December 2, 2010 at 11:33amthats what the question said

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