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OpenStudy (chupacabraj):
Finding the local max and min of this multivariable function.
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OpenStudy (chupacabraj):
\[f(x,y) = x^3 -12xy + 8y^3\]
OpenStudy (chupacabraj):
\[f_{xx}= 3x^2 -12y = 0\]
OpenStudy (chupacabraj):
\[f_{yy}= -12x + 24y^2 = 0\]
OpenStudy (chupacabraj):
I just don't know how to solve for x and y...
OpenStudy (chupacabraj):
I need to find the critical point(s).
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OpenStudy (issimplcalcus):
What math are you in?
OpenStudy (chupacabraj):
calc 3, i just figured it out though
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