clc
format compact
format long e
step=.2
x1=2.6
x1=x1+step
x1=x1+step
x1=x1+step
x1=x1+step
x1=x1+step
x1=x1+step
x1=x1+step
x1=x1+step
% A list of numbers from .2 to 4
y=[1:20]
x1=step*y
% The same list using different commands
x2=[step:step:20*step]
% The same list using a third set of commands
y=ones(1,20)
y=step*y
x3=cumsum(y)
%%% All three displayed simultaneously as columns
[x1;x2;x3]'
%% Causing bigger problems
y=ones(1,200);
y=step/10*y;
x4=cumsum(y);
[x3;x4(10:10:end)]'
% A look at the hex format for x3
format hex
[x3;x4(10:10:end)]'
%%% Other floating point issues
format long e
[eps, realmin, realmax]
% Here's a list of the first 50 factorials
format long g
n=1:200;
factorials=cumprod(n);
A=[n;factorials]';
A(1:3:end,:)
% Calculating e
terms = [1, 1./factorials];
approximations=cumsum(terms);
n=[0:length(terms)-1];
B=[n;approximations]';
B(1:20,:)