Write a function in Matlab that would take as input a row matrix.

* Use a for loop to compute the square of each element in A and store the square values in matrix B.
function [B] = Square(A)

* Recall the function file that you created from the command window to take an input A=1:10

* Use plot function to plot B versus A

Can anyone help me understand the question so i can try solving it?

will i be using arrays in this problem? and how will i plot a graph?

Answer 1

[Image Analyst]

You can do this all in one m-file. Have an m-file called test_square.m and in there have both the test harness (calling function) and the Square function. It will look similar to this:

function test_square()
A = 1:10;
B = Square(A);
plot(A, B, 'ro-');
grid on;

function B = Square(A)
  for k = 1 : length(A)
    B.......
.... and so on.

In the loop you square each element of A because this is exactly what it told you to do. Then just click the green triangle, or type test_square on the command line, to run the program.

[Alnuaimi]

what is the 'ro-' , i kind of don't know a lot about programming in matlab

[Image Analyst]

r means red. o means to put a little circle at the data point. - means to connect the data points with a solid line between them.

[Alnuaimi]

Thanks a lot for the help!

Answer 2

[Walter Roberson]

Hint:

for K = 1 : 20
  B(K) = A(K) + 5;      %for example
end