CS 99
Summer 2002: Lab 4
Solutions

1. Colon notation

>>0:0.01:30*pi; %Part A)

>>mod(1:100, 2); %Part B)

>>mod(100:-1:1, 5); %Part C)

>>(1:41).^3; %Part D)

>>2.^(0:50); %Part E)

>> (1:30).*(-1).^(0:29) %Part F)

>> sum( (200:-1:1).*(-1).^(0:199)) %Part G)

ans =
100

>> sum(3.^(0:10) + (-2).^(0:10)) %Part H)

ans =

89256

2. Introduction to for loops

%LAB4Part2.m

x = input(‘Enter a value for x: ‘);

n = input(‘Enter a value for n: ‘);
result = 0;

for ii = 1 : n

result = result + (1 + x)^ii;

end