Print a Simple Function: How to Print x^2/3 in Just a Few Steps

[robax25]

how I print x^2/3

Here is my code

x=-100:100;
y=x.^(2/3),
plot(x,y)

 

[DrClaude]

What is your question? What result do you get when try what you wrote?

 

[robax25]

Matlab does not display right graph. I think that it displays wrong. my question is that how do I print y=x.^(2/3)?

 

[DrClaude]

Matlab does not display right graph. I think that it displays wrong.

It is hard to help you without more details.

You do realize that $x^{2/3}$ is problematic for $x <0$?

 

[robax25]

yes

 

[f95toli]

I can't see anything wrong with your code.

Did you notice the bit where Matlab states that it ignores the imaginary part of the answer when plotting?
What you are effectively doing is this

x=-100:100;
y=real(x.^(2/3))   %%Real part only
plot(x,y)

 

[Dr Transport]

comma in line 2, not a semi-colon... that is why is was crapping out