Question: QUESTION 3 Using the following function:z = 20 + 100x - 3x 2 - 2y 2 + x.y Find the value(s) of x and y

QUESTION 3

Using the following function:z = 20 + 100x - 3x²- 2y²+ x.y

Find the value(s) of x and y that maximise z, making sure that you check if your solution is a point of inflection or a saddle point.

Please use excel and provide screenshots of the excel file for explanation.

QUESTION 3Using the following function:z = 20 + 100x - 3x2- 2y2+

Breaks Indent Spacing Align Line Numbers * Left: 10 cm Before: 0 pt Li Group Size Columns Position Wrap Bring Send Selection be Hyphenation Right: 0 cm After: 0 pt Text " Forward * Backward Pane Rotate Page Setup Paragraph Arrange QUESTION 9 Use the following variance/covariance matrix (vac), the matrices of portfolio weights (wts) and returns (ret) to calculate the portfolio variance and the portfolio return. 244 64 36 vac = 64 128 24 wts = 0.55 0.35 0.1] ret = 0.12 0.1 0.08 36 24 96

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