what is wrong in this code in matlab?

Hello, I want write this formula but my answer in matlab always -Inf :(

   Xmax - Fd*((1/G^(1/Fe))-1);

Answer 1

[Matt J]

Look at the results of intermediate calculations, e.g., 1/Fe, then G^(1/Fe), then 1/G^(1/Fe), until you find where it goes bad. Likely you have divided by zero somewhere.

[Dani D]

Thanks, But how can write correct expression?

[Matt J]

There is no indication that anything is incorrect. For example, there is nothing wrong with the expression 1/x as long as you don't let x=0.