how to obtain new sequence ,define by length 5 using matlab

For the following sequences, defined for length=5

• a[n] = [1 2 4 − 9 1]

• b[n] = [2 − 1 3 3 0]

Obtain the new sequences:

• c[n] = 2.a[n].b[n]

• d[n] = a[n] + b[n]

• e[n] = 0.5.a[n]

[Jan]

This does not look like Matlab. I cannot guess reliably, what "[1 2 4 − 9 1] " means. Is this:

a = [1, 2, 3, -9, 1]

What do the dots mean in "2.a[n].b[n]" ?

The text sounds like a homework. Is this the case? Then please show, what you have tried so far.

[Walter Roberson]

I think the dot is element multiplication

Answer 1

[Abhishek Chakram]

Hi Judith olumeko,

It is my understanding that you want to generate new sequences from the array “a” and “b”. Here is how you can achieve the same:

% Define the sequences
a = [1, 2, 4, -9, 1];
b = [2, -1, 3, 3, 0];

% Calculate c[n]
c = 2 * a .* b;

% Calculate d[n]
d = a + b;

% Calculate e[n]
e = 0.5 * a;

% Display the new sequences
disp(c);
disp(d);
disp(e);

Hope this answers your question.

Best Regards,

Abhishek Chakram