I start to calculate the integrals and yes :
-the first primitive function is 1/cos(y) because (1/cos(y))' is sin(y)/cos^2(y) , from 0 to pi/3 is 1
-and the second one is is 4*sqrt(2c)/3
but from these i found c=9/32
Edited on October 25, 2007, 3:34 pm
Edited on October 25, 2007, 3:35 pm
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