What is the extreme f(2.52,5.15)=3x^4y^2-18xy ?

The extreme f(2.52,5.15)=3x^4y^2-18xy is None

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extreme f(2.52,5.15)=3x^4y^2-18xy

extreme points

f (2.52, 5.15) = 3 x^{4} y^{2} - 18 x y

None

Solution steps

Find the critical points:

None

3 x^{4} y^{2} - 18 x y

has no critical points, therefore there are no extreme points

None

f (x) = - 3 x^{4} + 20 x^{3} - 36 x^{2} + 7

y = - 2 + 5 sin (\frac{π}{12} (x - 2))

(x^{2} - 1) (x^{2} - 9)

f (x) = 3 x^{2} + 2 y^{2} - x y - 4 x - 7 y + 12

y = \frac{\frac{25}{32} x ^{3} + 6400}{x}

What is the extreme f(2.52,5.15)=3x^4y^2-18xy ?
The extreme f(2.52,5.15)=3x^4y^2-18xy is None