Consider the function f(x, y) = 2x² - y² + 4x + 6y subject to x + 2y = 20 a) Write down the first order conditions. b) Find the extreme point c) Determine the nature of the extreme point.

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Q: Hi I need help with 4a) and c)

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Q: Suppose E(X) = 62, E(Y) = 91, a = 0.38, and b = 0.62. What is E(aX+bY)? (Please round to two decimal…

A: E(X) = 62, E(Y) = 91, a = 0.38, and b = 0.62.E(aX+bY)=aE(x)+bE(y)

Q: Good Day Kindly help me to classify the following series.

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Q: (2) Σ n=1 (B) Σ n=1 (0) n=1 2√n +1 3n2 +1 (−1)" In(n) n? (-2)" η3 +1

A: Since you have posted a question with sub-parts greater than three. We will provide the solution…