Change the sign. (Find the opposite, or additive inverse.) -9
A. -9
B. 
C. 
D. 9
Answer: D
Mathematics
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If f(x,y) = x² + 6y², use the gradient vector ?f(10, 2) to find the tangent line to the level curve f(x,y) = 124 at the point (10, 2).
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Mathematics
Find the vector projv u.v = i + j + k, u = 3i + 4j + 12k
A. 
i + 
j + 
k
B. 
i + 
j + 
k
C. 
i + 
j + 
k
D. 
i + 
j + 
k
Mathematics
Find the unknown length in the right triangle. Simplify the answer if necessary.
A. 2
B. 
C. 
D. 2
Mathematics
Factor completely, or state that the polynomial is prime.4x5 - 4xy2
A. 4x(x2 - y)2 B. 4x(x2 + y2)(x + y)(x - y) C. 4x(x2 + y)(x2 - y) D. prime
Mathematics