Find the first four nonzero terms in the Maclaurin series for the function.sin x cos x
A. x - 
x3 + 
x5 - 
x7+ . . .
B. x - 
x3 + 
x5 - 
x7 + . . .
C. x + 
x3 - 
x5 + 
x7 + . . .
D. 1 + x - 
x2 - 
x3 + . . .
Answer: A
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B. 
?
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D. 
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