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1_4 questions Find the extreme values, if any, of the following four functions. Check whether they are maxima or minima by the determinantal test. 1.

1_4 questions

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Find the extreme values, if any, of the following four functions. Check whether they are maxima or minima by the determinantal test. 1. z = x2 + 3x3 - 3x1X2+ 4x2x3+6x3 2. z= 29 - (x7+ x3 + x3) 3. Z = X1X3 + X7 - X2 +x2x3 +x3+ 3x3 4. z = e2x + e- y tew- (2x + 2ew - y) Then answer the following questions regarding Hessian matrices and their characteristic

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