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Mathematics 7 Online
OpenStudy (anonymous):

integral sec^4 (x/2) dx from 0 to pi/4

OpenStudy (anonymous):

@sumeer please help!

OpenStudy (anonymous):

@esamalaa you too! :) please

OpenStudy (anonymous):

first expand sec^4(x/2) to sec^2(x/2)*sec^2(x/2)

OpenStudy (anonymous):

*change

OpenStudy (anonymous):

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