Provide an appropriate response.Determine the quadrants in which the given point (x, y) may lie when y < 0.
A. II or III
B. III or IV
C. I or IV
D. I or II
Answer: B
Mathematics
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Find the length of the indicated portion of the trajectory.r(t) = (2cos t)i + (2sin t)j + 3tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Solve the system of equations by substitution.2x + 9y = -8 x + 
y = 
A. (5, -2) B. (5, 2) C. (-5, 2) D. ( -5, -2)
Mathematics
Find the first partial derivatives of the function.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Find the product and simplify. Assume all variables represent nonnegative real numbers.(
)2
A. 
B. 
C. 32
D. 16
Mathematics