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![[Post New]](/templates/default/images/icon_minipost_new.gif) 13 Feb 2008 20:58:04 IST
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13 Feb 2008 21:01:29 IST
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is it x*x or xsquare
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13 Feb 2008 21:25:33 IST
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putting x=atan(b)
limit changes from 0 to pi/2
dx=asecb*secb db
substituing
weget
integral of o to pi/2
cos^12b(cos power 12 b) db/ a^13
so using reduction formula
ans:
1/a^13 * [11*9*7*5*3*1] / [12*10*8*6*4*2] * pi/2
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