Find the indicated relative minimum or maximum.Minimum of f(x,y) = x2 + y2 - xy,subject to x - y = 10
A. f(2, -1) = 7
B. f(5, 5) = 25
C. f(1, 2) = 3
D. f(5, -5) = 75
Answer: D
Mathematics
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What is the domain of f(x)? What is its range?f(x) = 
+ 5
A. Domain: (-?, -3) ? (-3, ?); range: (-?, 5) B. Domain: (-?, 3) ? (3, ?); range: (-?, 5) C. Domain: (-?, 3) ? (3, ?); range: (-?, 0) D. Domain: (-?, 3) ? (3, ?); range: ( 5, ?)
Mathematics
Find the indicated set.Let U = Universal set = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {2, 4, 5, 6}, B = {1, 3, 5, 8} and C = {2, 5, 9}.Find 
.
A. {1, 2, 3, 4, 5, 6, 8, 9} B. {0, 7} C. {0, 7, 9} D. {0, 1, 2, 3, 4, 6, 7, 8, 9}
Mathematics
Add or subtract as indicated. Write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
Use the gradient to find the directional derivative of the function at P in the direction of Q.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics