How to attempt the first stage of this task?

Hey guys, I currently have been set a task to achieve, but I don't know where to begin. Below is the objectives i need to achieve.

• a. Fill a 1024 point array (A) with two cycles of a cosine wave. Do the same for a second array (B). Form the product of the arrays and estimate it’s integral numerically. Plot A and B and the product and add the numerical value of the integral in the plot. You should not use the symbolic toolbox for this task.

• b. Repeat 3.a, this time using 20 cycles of a cosine wave for array B. comment on the result.

• c. Repeat 3.a again, this time using 2 cycles of a sine wave for array B. Comment on the results.

All approaches and suggestions are welcome.

Thanks to all,

James

Answer 1

[darova]

I give you a start:

This is cosine wave (one cycle)

I usually use linspace to form array with number of points i want

x = linspace(0,4*pi,1024);              % 1024 points for 2 cycles

Use cos() to create A and B arrays. Use trapz() to calculate integral numerically

Feel free to ask questions