why do i get last value of loop?

clc
clear
In = input;%this is my data
tms = 0.5;
psm1 = 1.1:20;
    for i = 1:length(psm1) %my problem is here >>>>first i tried psm1 here but i got only last value so i wrote this
        k1 = In(1,1);
        alfa1 = In(1,2);
        betta1 = In(1,3);
        t(i) = ((k1 + betta1)/(i^alfa1 - 1))*tms
        
    end
plot(psm1,t)

as u see i need i=1.1:length(psm1) but i dont know what to do

Answer 1

[Voss]

Is this what you want to do?

clc
clear

% In = input;%this is my data
In = [2 3 4]; % using some arbitrary values

tms = 0.5;
psm1 = 1.1:20;
for i = 1:length(psm1) %my problem is here >>>>first i tried psm1 here but i got only last value so i wrote this
    k1 = In(1,1);
    alfa1 = In(1,2);
    betta1 = In(1,3);
%     t(i) = ((k1 + betta1)/(i^alfa1 - 1))*tms
    t(i) = ((k1 + betta1)/(psm1(i)^alfa1 - 1))*tms;
end
plot(psm1,t)