Find any relative extrema.f(x, y) = x2 + y2
A. f(0, 0) = 0, relative maximum
B. f(1, 1) = 2, relative maximum
C. No relative extrema
D. f(0, 0) = 0, relative minimum
Answer: D
Mathematics
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A. 1
B. - 
C. 
D. Undefined
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Write as a percent.0.1554
A. 15.54% B. 0.01554% C. 1.554% D. 155.4%
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Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (cot-1 u)
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality using the x-intercept method or the intersection-of-graphs method. Express the solution set in interval notation.15y + 27 > 3(4y + 15)
A. (6, ?) B. (-?, 6) C. (-?, 15) D. (15, ?)
Mathematics