Graph the function and y = cos x in the same rectangular system for 0 ? x ? 2?.y = 
cos x
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (9t sin t + 9 cos t)i + (9 t cos t - 9 sin t)j ; -2 ? t ? 5
A. 189 B. 130.5 C. 261 D. 94.5
Mathematics
Graph the polar equation.r = 
+ cos ?
A. 
B. 
C. 
D. 
Mathematics
Simplify.(-2a)5
A. -32a5 B. -10a5 C. -10a D. -32a
Mathematics
Solve the equation by making an appropriate substitution.x2/3 + 2x1/3 - 15 = 0
A. {-3, 5} B. {-27, 125} C. {-125, 27} D. {-5, 3}
Mathematics