1. A resistor in an electric circuit satisfies the equation where is the voltage and is the current. The following measurements of voltage and current were taken: Estimate the resistance. 2. The...

1.

A resistor in an electric circuit satisfies the equation

where

is the voltage and

is the current. The following measurements of voltage and current were taken:

Estimate the resistance.

2.

The equation
represents a plane, and the points in the table are on or close to a plane. Use least squares to determine the plane, and graph the data points and the plane on the same set of
-axes.

The following MATLAB statements plot the data points:

To plot the plane, use the functions meshgrid and surf. After calling surf, the statement alpha(0.5) will assure that the plane will not obscure portions of the circles.