ta123
f'(x)= x^(2)cosx2xsinx=(x^(2)+2)sinx



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ta123
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is this right??

myininaya
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what is f(x)=?
no
x^2cos(x)2xsin(x)=x(xcos(x)2sin(x))

ta123
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these is the actually problem on the attachment

ta123
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I believe its answer choice 6, I'm I right?

myininaya
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yes

ta123
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yes! Thanks, I was just checking