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Create a vector of x values from 0 to 20π, with a spacing of π / 100, where
y = x ∙ sin(x)
z = x ∙ cos(x)
12. Create an x-y plot of x and y.
13. Create a polar plot of x and y.
14. Create a three-dimensional line plot of x,y, and z. Be sure to add a title and lables.
15. Figure out how to adjust your input to plot3 in Problem 14, to create a graph that looks like a tornado.

Write MATLAB scripts for the following:

a) To accept two numbers from the user; Display all prime numbers between
these two numbers.

b)To accept two numbers from the user and display perfect numbers
between these two numbers.

c) To display Armstrong numbers from 100 to 999 inclusive.

hi.... i have a problem in my code in matlab
i plot my diagram (ECG ) that i get info from database in this site:http://www.physionet.org/ with
now i have ECG diagram in matlab but i want to find value and position of max and min OF ALL OF WAVE ....but with this code i found just one min and one max and i dont know how i can write a loop or for to search and find whole Min and Max of wave with their values in axes y ... in medical field i mean find R-peaks in EKG
thanks alot and my code


x = load ('C:\ekg\example_ecg.txt');
y = x ( : , 2);
h = plot (y );
x = get(h,'XData'); % Get the plotted data
y = get(h,'YData');
imin = find(min(y) == y);% Find the index of the min and max
imax = find(max(y) == y);

text(x(imin),y(imin),[' Min ',num2str(y(imin))],...
'VerticalAlignment','middle',...
'HorizontalAlignment','left',...
'FontSize',7)
text(x(imax),y(imax),['Max ',num2str(y(imax))],...
'VerticalAlignment','bottom',...
'HorizontalAlignment','right',...
'FontSize',7)

create a matlab program that will read images a,b,c Compute and display the Average optical density (AOC) of the three images

A ball of mass m1 and velocity v moves in the direction of +x and makes a central elastic collision with another ball, which is initially at rest and has mass m2, as shown in Figure.Write MATLAB GUI, to perform a simulation and animation of the system for the given m1, m2, and v.

If 2% of the bolts produced by a machine are defective, write a Matlab m-file to determine and output the probability that out of 400 bolts chosen at random greater than 10 bolts will be defective. Compare your results with the analytical solution. Use a billon random events.
pls help us...pls pls pls:(:(:(

Assignment about MATLAB

price??

The goal of this assignment is to generate the likelihood of getting three of a kind in
a single roll of 5 fair dice by developing a convergent process. This will require the writing of
both a script and a function. In the function, you should roll 5 dice 500 times. As each roll is
taken, the function should have the logic to decide if three (or more) of the dice contain the exact
same numbers. Of the 500 rolls, the function should return the number of rolls that contain three
(or more) of a kind. Your script should call your die rolling routine, gather the results, and
implement a convergent process to decide when you have achieved accuracy with your
percentages. The first line of your script should be the tolerance to which you are working. For
example, “tol = 0.01”. You should expect this number to be changed to test your
code.

DO you help to solve mechanical engineering proble of Finite Element Analysis using MATLAB

I need a matlab program coding that would create an unstable system first and then by correcting the same system I have to create a stable system. I will be very obliged if you can help me with my problem. Thank you.