# Hi, I have set of values for x (x = 1:10) and I have a equation y = x^(1/2)/x, how can i get and display an array of values of y from the x's ?

2 views (last 30 days)
Gurinder Punni on 31 Jan 2020
Commented: ME on 3 Feb 2020
All i get is one number, when i should be getting a array of y values.

Geoff Hayes on 31 Jan 2020
Gurinder - please show your code that you have written so that we can explain why you are getting only one number when it should be an array.
Gurinder Punni on 31 Jan 2020
x = 1:10;
y = x.^(1/2)./x
fprintf(' %.2f \n', y)
this is my code

ME on 31 Jan 2020
I don't know how you've got one number but I think you should be using:
x = 1:10
y = x.^(1/2)./x

Gurinder Punni on 31 Jan 2020
someone corrected me on my equation before, can you explain the signifance of the . after the x.
Star Strider on 31 Jan 2020
ME on 3 Feb 2020
As Star Strider says, thius is the difference between array and matrix operations - i.e. do you want the operation to perform as if your inputs are matrices or not.
If you starts with
A=[2 2 2;2 2 2;2 2 2]
B=[3 3 3;3 3 3;3 3 3]
then A*B will perform a matrix multiplication and give:
A*B
ans =
18 18 18
18 18 18
18 18 18
whereas A.*B will do an array operation and calculate element-wise to give:
A.*B
ans =
6 6 6
6 6 6
6 6 6
Can I also please request that if this answer was of help to you that you accept my answer.