How to find solution of higher order equations for a number of Values?

I want to find the solution of (r^2)/sqrt((1-r^2)^2+4*1.44*r^2) for all the values of 'r' between (0-5) with an increment of 0.01 . I was using:

r=0:0.01:5;

y=(r^2)/sqrt((1-r^2)^2+4*1.44*r^2)

But it kept on saying that:

??? Error using ==> mpower Inputs must be a scalar and a square matrix. To compute elementwise POWER, use POWER (.^) instead".

I want to know that how can i find the solution to this problem. Please help me out here.

Thanks,

Danish

Answer 1

[Star Strider]

It keeps saying that because it’s doing its best to give you the solution to your problem. I can’t improve on its advise.

[Danish Ali]

But then how do i find the solution to this problem? Is there any way of doing that?

[Star Strider]

You need to vectorise it (change (^) to (.^), (/) to (./) (and although it doesn’t apply here, (*) to (.*)):

r=0:0.01:5;

y=(r.^2)./sqrt((1-r.^2).^2+4*1.44*r.^2);

figure(1)
plot(r, y)
grid

[Danish Ali]

Yeah it worked. Thanks

[Star Strider]

My pleasure!