The function f(r,y) is defined as: f(x, y) = 3ry +2xe +5rye +6ry+7ry ln r Its...
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The function f(r,y) is defined as: f(x, y) = 3r°y +2xe" +5rye +6ry+7ry ln r Its second derivative with respect to r and y is: fay = 24.ry + ae + 5ye" + b+7 In.r where a and b are numbers. Find a +b. Answer: I and y are two positive numbers that satisfy the constraint equation 2+9y = 72 %3D What is the maximum possible value of the product ry? Answer: The function f(r,y) is defined as: f(x, y) = 3r°y +2xe" +5rye +6ry+7ry ln r Its second derivative with respect to r and y is: fay = 24.ry + ae + 5ye" + b+7 In.r where a and b are numbers. Find a +b. Answer: I and y are two positive numbers that satisfy the constraint equation 2+9y = 72 %3D What is the maximum possible value of the product ry? Answer:
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