Using Matlab: EE 221 Computing for Engineers Homework #14 Problem #1 (30 points)

Question

Using Matlab:

EE 221 Computing for Engineers Homework #14 Problem #1 (30 points): Let the mathematical function f(x) be defined as: f(x)exp4x) sin(20x) Write a script in Matlab that finds the brackets (subintervals) where all the zero crossings are occurring and the number of zeros (n), over the interval from [0,1] where the subinterval size is 0.001. Submit the script as a·m file. ( Note: Script is a list of commands which is different from functions) Hint: Initialize the following variables within your script then follow a similar code as the one presented in the lecture. Xmin = 0; Xmax 1 Interval 0.001; n-0 You may plot the function to provide you with a visualization of the zero locations

Explanation / Answer

We can use a simple inbuit command from the matlab

zcdOut = zcd(input)

function will look like this

% zeroCrossFind.m

xmin =0;

xmax =1;

interval = .001;

x_axis=[xmin:interval:xmax];

y_axis= exp(-x).*sin(20.*x);

zcdOut = zcd(y_axis); % finding out the zero crossing

number_zeroCRossing = length(zcdOut) % finding the length

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