Create for loop to calculate irr

I am currently trying to calculate the IRR for a set number of NNV values.

I have created a formula for calculating the NNV, which is:

syms n

NNV=round(-ko+symsum(tot_profit./((1+r)^n),n,1,30))

-Where r is the rate

-n goes between 1 and 30

-tot_profit is a matrix of 20 different profits

I was thinking about creating a for loop that can go through all the different values and find the IRR (which is the rate at which NNV=0), but i don't know how to set this up. Does anyone know of a good way to solve this?

Answer 1

[Torsten]

syms r n N
symsum(1/(1+r)^n,n,1,N)

ans = 

ko = 100;
tot_profit = 7;
n = 30;
fun = @(r) -ko + tot_profit* ((r+1)^n-1)/(r*(r+1)^n);
r = fzero(fun,[0.01 0.2])

r = 0.0566