Question
xamine the following functions for maxima and minima:
a)
b)
Answer :
Word Count : 402
For function ( z = -x^2 + xy - y^2 + x + 5y ), we first find the partial derivatives: [ \frac{\partial z}{\partial x} = -2x + y + 1, \quad \frac{\partial z}{\partial y} = x - 2y + 5 ] Setting them equal to zero: [ -2x + y + 1 = 0 \quad \Rightarrow \quad y = 2x - 1 ] [ x - __________ _____ _________ __________ _____ ____.
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For function ( z = -x^2 + xy - y^2 + x + 5y ), we first find the partial derivatives: [ \frac{\partial z}{\partial x} = -2x + y + 1, \quad \frac{\partial z}{\partial y} = x - 2y + 5 ] Setting them equal to zero: [ -2x + y + 1 = 0 \quad \Rightarrow \quad y = 2x - 1 ] [ x - __________ _____ _________ __________ _____ ____.
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