THIS NEEDS TO BE ANSWERED IN MATLAB CODING ONLY please use screen shots so I can

Question

THIS NEEDS TO BE

ANSWERED IN MATLAB CODING ONLY please use screen shots so I can follow along because these two questions have been answered, but I do not understand how it works!

See problems under image below....

I KNOW HOW TO CALCULATE ALL OF THESE PROBLEMS ALREADY I DON'T KNOW HOW TO CODE IN MATLAB, so if possible show me the steps so I understand, Thank you.

ALSO CAN YOU PLEASE ONLY USE ONE (1) function M FILE

my code doesn't work (see screen shot)

outputs errors

this needs to be able to run all of this data (see below)

>> vpa(myimproperintegral(@(x)4.5*exp(-0.75*x)))
ans =
0.62537006964643897429360481489339

>> vpa(myimproperintegral(@(x)9/x^5.4))
ans =
0.014553394300179510195438787339928

>> vpa(myimproperintegral(@(x)2.6*exp(-1.25*x)))
ans =
0.044901566777145309907390360099547

>> vpa(myimproperintegral(@(x)4.3*exp(-1.5*x)))
ans =
0.03026028154853748901738458470208

>> vpa(myimproperintegral(@(x)1.5*exp(-1.5*x)))
ans =
0.0105559121680944729130411341984

>> vpa(myimproperintegral(@(x)8/x^5.6))
ans =
0.010047002638331100110209488082967

>> vpa(myimproperintegral(@(x)4.5*exp(-1.75*x)))
ans =
0.013086146761883056352775473286745

>> vpa(myimproperintegral(@(x)0.1*exp(-0.75*x)))
ans =
0.010917530494114030472942200552035

>> vpa(myimproperintegral(@(x)7/x^4.2))
ans =
0.05795968985412595989684411807316

>> vpa(myimproperintegral(@(x)7/x^5))
ans =
0.018804938271604938271604938271605

Math 206 Spring 2017 Project 3 Generated For: What to Submit: For this project you will need to create and upload four function m-files Grading Method: For grading we will run a variety of data through your function m-files. Each m-file will earn credit based up how many correct values it returns. For example if we test it on 10 sets of input and it returns 7 correct values it would earn 70% Very Important Note: Your functions should print absolutely nothing (no disp and please do use semicolons to suppress calculation outputs) and should only return the value requested. The returned value will be displayed automatically as a result of being returned from the function Another Very Important Note: Please do not try to find Matlab functions which do these things for you. The point of these projects is to practice the material from the tutorials and so trying to use obscure Matlab functions which shortcut the whole process means you're not really doing what the project is trying to test. If you're not sure about whether you can or cannot use some specific Matlab function for a project please ask me Sample Data See the sample data (also in this directory) to see some sample input and output

Explanation / Answer

try to run below code...

function result = myimproperintegral(f)
f = @(x)9./x.^5.4;
xstart = 3;
xend=4;
prevapproxl = integral(f,xstart,xend);
xend++;
approxl = integral(f,xstart,xend);

while(prevapproxl - approxl >= 10.^-2)
prevapproxl = approxl;
xend++;
approxl = integral(f,xstart,xend);
end
result = approxl;
end

Please let me know if you are getting incorrect result.

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