Matlab: how to write a function that takes a number n and returns P = 1*1.2*1.4*.... *(1+0.2*(n-1))

Question

How could you create a function called repeat_prod(n) that takes a number n and returns this function P = 1*1.2*1.4*....(1+0.2(n-1))

I’m having a hard time understanding how this function should be and I appreciate any direction.

I tried to:

function 1*1.2*1.4*....*(1+0.2*(n-1)) = repeat_prod(n)

for n:
n = 1*1.2*1.4*....*(1+0.2*(n-1));

end

Answer 1

If I understand your question, it’s something you need:

function [P] = repeat_prod(n)
P = 1;
for i = 1:(n-1)
    P = P*(1+0.2*i);
end
end

In defining the function, what is between [] is what will be returned, what is between () are the inputs of the function. O is defined as follows::

for contador = inicio:passo:final

but you can omit the step, which then will be the default value 1. Both to terminate the for, and to terminate the entire function, you must write end. Pay attention to the last value you want to iterate, if it will be n or n-1.