Find the derivative.y = 4ex2
A. 8xex2
B. 8xe2x
C. 8xe
D. 8xe4x2
Answer: A
Mathematics
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Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = i - j, w = 2i + 4j
A. 116.6° B. -18.4° C. 18.4° D. 108.4°
Mathematics
Solve the problem.Find the equation of the line s with y-intercept (0, 2) and slope parallel to the slope of line t, 
A. y = - 
x + 2
B. y = 
x - 2
C. y = 
x + 2
D. y = 
x + 2
Mathematics
Write the expression in the standard form a + bi.8i - (-3 - i)
A. -3 - 9i B. 3 + 9i C. -3 + 7i D. 3 - 7i
Mathematics
Complete.6 wk = ___ hr
A. 1008 B. 6 C. 144 D. 42
Mathematics