matlab - Error with ^2, says matrix should be square -

i wanted plot following

y=linspace(0,d,100)  temp=y^2;  plot(y,temp);

i getting error y^2, says matrix should square.

is there way plot.

you not getting error because of plot. getting because of

temp=y^2

instead, should using

temp=y.^2

^ means matrix power. .^ elementwise power. can find more matlab operators here.

let's have 3x3 matrix, magic(3).

a=magic(3) =       8     1     6      3     5     7      4     9     2

here square of matrix (which a*a, dan suggested):

a^2 ans =      91    67    67     67    91    67     67    67    91

here matrix contains squares of a's elements:

a.^2 ans =     64     1    36      9    25    49     16    81     4

Bready