8.1 Multivariable Functions--Level Curves and Cross Sections (Video 7) | Business Calculus 2

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We define level curves of a function of two variables and do an example in which we draw level curves and use them to sketch a 3D graph of the original function.

We also find the intersections of a 3D surface when sliced by various planes parallel to the coordinate axes. We also review the equations of an ellipse and a hyperbola.

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