Find any relative extrema.f(x, y) = x3 + y3 - 9xy
A. f(1, 1) = -7, relative minimum
B. f(2, 2) = -20, relative minimum
C. No relative extrema
D. f(3, 3) = -27, relative minimum
Answer: D
Mathematics
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Find the extreme values of the function subject to the given constraint.
A. Maximum: none; minimum: 
at 
B. Maximum: none; minimum: 
at 
C. Maximum: none; minimum: 
at 
D. Maximum: none; minimum: 2 at 
Mathematics
Reduce:
Mathematics
Multiply. Write your answer in a + bi form.(3 - 2i)(9 + 5i)
A. 37 + 3i B. 17 - 33i C. 37 - 3i D. -10i2 - 3i + 27
Mathematics
Solve for y.6x - 7y = 4
A. y = 
B. y = 
C. y = 
D. y = 6x - 4
Mathematics