In Exercises 8992, use a computer algebra system to find the first and second partial
Chapter 13, Problem 89(choose chapter or problem)
In Exercises 89–92, use a computer algebra system to find the first and second partial derivatives of the function. Determine whether there exist values of x and y such that \(f_{x}(x, y)=0\) and \(f_{y}(x, y)=0\) simultaneously.
\(f(x, y)=x \sec y\)
Text Transcription:
f_x(x, y)=0
f_y(x, y)=0
f(x,y)=xsecy
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