I have been asked to find the integral sinx cox dx using the identity sin2x = 2sinxcosx(adsbygoogle = window.adsbygoogle || []).push({});

My work...

integral of sinx cox dx

= 1/2 integral of 2 sinx cos dx

= 1/2 integral of sin 2x dx

u = 2x

du = 2

so 1/2 * 1/2 of integral of sin u du

= 1/4 [-cos u] + c

= - 1/4 cos 2x + cis this correct?

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# Homework Help: Integration question

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