with this code, im trying to display the results for (y0-y100). But im always getting the error. need help on this.thanks

for k=1:100

y(k)=y(k-1)*k;

y(0)=1;

end

??? Attempted to access y(0); index must be a positive integer or logical.

Answer 1

[David Young]

In MATLAB, indices start from 1. The first time through the loop, the code tries to do this:

y(1) = y(0)*1;

but there is no element y(0).

What you probably need to do is to put the line

y(1) = 1;

before the loop, and start the loop at k=2 by writing "for k=2:100".

[Walter Roberson]

You need to go to 101 and you need

y(k) = y(k-1)*(k-1);

The code (explicitly or implicitly) calculates 0! to 100! which is 101 values. If you do not use *(k-1) and do not go to 101, you have the effect of calculating 1! to 100! which is 100 values.