i have this problem in the picture below ...can u help me about the problem??

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ahmed altaee 2016-12-12

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评论： Greg Dionne 2016-12-14

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i have this problem in the picture below

can u help me about the problem??

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Greg Dionne 2016-12-12

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sin(x) and cos(x) require parentheses about their arguments.

So you need to say sin(u(3)) and cos(u(3))

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ahmed altaee 2016-12-13

编辑：ahmed altaee 2016-12-13

i did it and stay the same problem

Greg Dionne 2016-12-14

That looks fine to me. Maybe there's something else nearby or u() and g are not defined like you think they are? Good luck.

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