2. Let the joint pmf of X and Y be defined by f (x, y) = , x = 1, 2, y = 1, 2, 3, 4. (a) Find fx(x), the marginal pmf of X. (b) Find fy (y), the marginal pmf of Y. (c) Find P(X >Y).

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A: if we want to fine any fuction has relative extrema then

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Q: Find the local maxima and local minima and saddle points of a function  f(x,y) f(x,y)=x^3-3xy^2

A: To find: Find the local maxima and local minima and saddle points of a function  f(x,y)

Q: Examine f(x,y) =  x3 - 3xy + y3 + 5 for extrema & saddle points

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Q: Find all of the critical points of the function f(x, y) = x²y². Can the second derivatives test be…

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Q: find the local max and min values and saddle points of the function f(x,y)=xy*(1-x-y)

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Q: Find the Partial Derivatives of the functions with respect to each variable 3) f(x, y) (xy-1)

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Q: (2) Consider the function f(x, y) = -x* - ²- 3 + ry³ + 5. (a) Find the critical points of f. (b)…

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