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OpenStudy (ksaimouli):
evaluate
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OpenStudy (ksaimouli):
\[\frac{ -x^2 }{ 2 }\cos2x+\frac{ x }{ 2 }\sin2x+\frac{ 1 }{ 4 }\cos 2x\]
OpenStudy (ksaimouli):
to |dw:1360893059171:dw|
OpenStudy (ksaimouli):
i tried this i got \[\frac{ \pi^2 }{ 8 }-\frac{ 1 }{ 4 }\]
hartnn (hartnn):
how u got that ? show your work, i'll spot the error.
OpenStudy (ksaimouli):
oka
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OpenStudy (ksaimouli):
|dw:1360893431147:dw|
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