Find the linear model for data points (7,-3) and (-1,-1). Use both methods to find the interpolant.
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- Find the linear model for data points Use both methods to find the interpolant.
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Shree Charan
2023-5-4
The "polyfit" function may be used to find the linear model.
% Define the data points
x = [7, -1];
y = [-3, -1];
% Find the coefficients of the linear model
p = polyfit(x, y, 1);
slope = p(1);
intercept = p(2);
You can refer to the following MATLAB documentation to learn more about the “polyfit” function.
Further you can find interpolants using the "interp1" function
% Define the query points
xq = -5:0.1:8;
% Find the interpolated values using linear interpolation
yq = interp1(x, y, xq, 'linear');
% Plot the results
plot(x, y, 'o', xq, yq, '-');
xlabel('x');
ylabel('y');
legend('Data Points', 'Interpolant');
You can refer to the following MATLAB documentation to learn more about the "interp1" function.
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