f(x) = sqrt(25 - x^2); in matlab in matlab

To define and evaluate the function f(x) = sqrt(25 - x^2) in MATLAB, you can follow these steps:

Step 1: Define the function You can define the function f(x) as a MATLAB function using the following code:

main.m
function y = f(x)
    y = sqrt(25 - x.^2);
end
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Here, the input parameter x is used to compute the function value y.

Step 2: Evaluate the function To evaluate the function at a specific value of x, you can simply call the function with the desired value. For example, to evaluate f(3), you can use the following code:

main.m
x = 3;
result = f(x);
disp(result);
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This will display the result of the function evaluation at x=3.

Note: The .^ notation is used to perform element-wise squaring of the x array in the function definition.

I hope this helps! Let me know if you have any further questions.