Find the Extreme Values of the Function Subject to the Given

question 85

Multiple Choice

Find the extreme values of the function subject to the given constraint.
- $$f ( x , y ) = x y , \quad x ^ { 2 } + y ^ { 2 } = 32$$

• A) Maximum: 16 at (4, 4); minimum: -16 at (-4, -4)
• B) Maximum: 16 at (4, -4) and (-4, 4); minimum: -16 at (4, 4) and (-4, -4)
• C) Maximum: 16 at (4, 4) and (-4, -4); minimum: -16 at (4, -4) and (-4, 4)
• D) Maximum: 16 at (4, 4); minimum: 0 at (0, 0)

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