Use a sum-to-product identity to rewrite the expression.sin (7t + 8) + sin (2t + 4)
A. 2cos cos
B. 2cos sin
C. 2sin cos
D. 2sin sin
Answer: C
Mathematics
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Find the gradient field of the function.f(x, y, z) = 5
A. ?f = 54i +
j + 5
k
B. ?f = i +
j - 5
k
C. ?f = 54i +
j - 5
k
D. ?f = 54i +
j + 5
k
Mathematics
Graph the equation.0.25x + 0.40y = 2
A.
B.
C.
D.
Mathematics
Find the limit.
A.
B. 3
C. -?
D.
Mathematics
Solve the rational inequality and graph the solution set on a real number line. ? 2
A. [-2, -1)
B. (-?, -1) ? [0, ?)
C. (-?, -2] ? (-1, ?)
D. (-1, 2]
Mathematics