Determine whether the sequence is geometric.1.4, -0.84, 0.504, -0.3024, . . .
A. Geometric
B. Not geometric
Answer: A
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Find all the second order partial derivatives of the given function.f(x, y) = cos xy2
A. fxx(x, y) = y2 sin xy2; fyy(x, y) = 2[2y2 cos (xy2) - sin (xy2)] ; fyx(x, y) = fxy(x, y) = 2y[y2 cos (xy2) - sin (xy2)]
B. fxx(x, y) = -y4 cos xy2; fyy(x, y) = - 2x[2xy2 cos (xy2) + sin (xy2)]; fyx(x, y) = fxy(x, y) = - 2y[xy2 cos (xy2) + sin (xy2)];
C. fxx(x, y) = - y2 sin xy2; fyy(x, y) = 2[ sin (xy2)- 2y2 cos (xy2)] ; fyx(x, y) = fxy(x, y) = 2y [sin (xy2)-y2 cos (xy2)]
D. fxx(x, y) = - y2 sin xy2; fyy(x, y) = 2y
; fyx(x, y) = fxy(x, y) = 2
Tell which of the named properties apply only to the Roman numeration systems. ?
A. multiplicative system B. repetitive system C. additive system D. grouping system E. all of these choices
Construct a truth table for the statement.(s ? ~q) ? (s ? ~q)
A. 
B. 
C. 
D. 
Simplify.-20 + 3 - 17 + (-3)
A. -9 B. -3 C. -31 D. -37