(Write a function called tri_area that returns the area of a triangle with base b and height h, where b and h are input arguments of the function in that order.)
If b and h happen to be positive integers, then the assignment on the first line would work, creating an array that is b rows high and h columns, with all the values set to 0 except for the very bottom corner that would be set to (0.5)*(b)*(h) . You would then retrieve that location to create the output. This seems a bit of a waste to create that array.
If either b or h is not a positive integer, such as if b were 2.5 and h were 5, then the assignment on your second line would fail.
You have confused arrays and formulas. In MATLAB, you create formulas using @, such as
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