CS pre lab HW

Pre-Lab 2 CS 122L - 5 Points Total

Objectives

● Learn how to create vectors and matrices in MATLAB

● Become familiar with some of the built-in MATLAB functions and how they work Deliverables

● Submit your pre-lab answers in Bblearn under the Lab 2 pre-lab assignment area prior to the start of class.

1) The primary form of data in MATLAB is vectors. They can be one-dimensional (i.e., vectors), or two-dimensional (i.e., matrices).

a) Write the MATLAB code to create a 1x3 vector containing the elements [1,2,3]. Additionally, write the MATLAB code to create a 3x1 vector with the same elements.

b) Write the MATLAB code to create the vector [2,4,6,...,98,100] and store it in a variable named x(Hint: There is a shorthand notation for regularly spaced vectors). c) Write the MATLAB code to create a 2x2 matrix containing the elements [1,2,3,4] (The order of the numbers do not matter).

2) MATLAB has several types of built-in math functions that can help you perform common operations. a) Write the MATLAB code that takes the absolute value of -134.

b) Write the MATLAB code that stores a number 3*pi in a variable named x, then takes the cosine of x. c) Functions can also be applied to vectors. Assume you have a vector y, which contains the elements [4,9,16]. Write the MATLAB code to take the square root of y. What should the result be?