Not enough input arguments for function length()

I DONT REALLY UNDERSTAND WHAT IS GOING ONE.

I use length([1 2 3]) along it runs well, but by putting into this code it constantly reports errors.

Somebody can explain the situation to me? please!

Answer 1

[Rik]

You are calling the a4_q3b function without input arguments. You did not give it any value for x, so when you try to use it, your function exits with an error. You are not providing an input to your function, so your function can't provide the input to length. The error has nothing to do with the length function and everything to do with how you call your function.

%this should work better:
a4_q3b([1 2 3],[4 5 6])

Also note that you probably want to use numel instead of length.