Find the specified extreme value on the given region.
Minimum of T(x, y) = x - 2y
A. -28
B. -1
C. -13
D. -16
Answer: D
Mathematics
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Solve the problem.For the function 
at the point 
, find the unit vector for which f is increasing most rapidly.
A. 
i + 
j
B. 
i + 
j
C. 
i + 
j
D. 
i + 
j
Mathematics
Evaluate.(-1)13
A. 1 B. -13 C. -1 D. 13
Mathematics
Solve by any desired method. If there is no real number solution, say so.x2 + 4x = 7
A. x = -2 ± 
B. x = 2 + 
C. x = -2 ± 2
D. x = -1 ± 
Mathematics
Find the quotient, and write in lowest terms, if necessary.
÷ 
A. 
B. - 
C. 
D. - 
Mathematics