invalid expression in the for loop

So, this is the project that I'm working on right now. And the problem is the for loop. It gets error message saying.Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

I don't know what is the wrong part.

Also, one can give some suggestion for my code if it is really clumpsy.

Really appreciate if someone can help

Answer 1

[Walter Roberson]

You are missing a ) after the / in the line you indicate. Count the brackets

(1+(velocity(1,i)^2).^(3/2)
1  2        3   2  1  2   1

You need one more ) character.

I suspect you could instead use

(1+velocity(1,i)^2).^(3/2)