Let f(x, y) = $x ^ { 2 }$ + 2xy + $5 y ^ { 2 }$ + 2x + 10y - 3. At which point(s) does f(x, y) have possible maximum/minimum values?
A) (-1, 17) and (0, 5)
B) (-1, 0) and (0, 1)
C) (0, -1)
D) (1, 0)
E) none of these

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The Answer of Let f(x, y) = $x ^ { 2 }$ + 2xy + $5 y ^ { 2 }$ + 2x + 10y - 3. At which point(s) does f(x, y) have possible maximum/minimum values?
A) (-1, 17) and (0, 5)
B) (-1, 0) and (0, 1)
C) (0, -1)
D) (1, 0)
E) none of these

Let F(x, Y) = x2x ^ { 2 }x2 + 2xy

Let F(x, Y) = $x ^ { 2 }$ + 2xy