Hallo, i have my matlab exam tomorrow, can anyone help me find the errors in the give Parameter. Thankyou

function y = f4(a)
v = [a;pi];
if v(2)>round(v(1))
    y= v(1);
else
    y=pi+v(3)
end

Answer 1

[Elias Gule]

The error is in the line

   y=pi+v(3)

You are essentially trying to retrieve the 3rd element of a 2-element array/vector. This will throw "Index exceeds matrix dimensions." exception. Note that the line

   v = [a;pi];

initializes a 2 x 1 vector, v.

[Walter Roberson]

This might be what is happening in practice, but in the general case, if the function were called with a column vector as input, then the entire column vector would be put into v, followed by pi. So if it were called with (for example) [8.3; 7.9] then v(1) would become 8.3, v(2) would become 7.9, and v(3) would become pi, and there would then be no processing error.

Therefore possibly the problem is in not passing a large enough vector to the function.