[SOLVED] AMATH301 Homework 0

1. Variables and Basic Computation Define the following variables in Matlab:

x = 10,           y = −2,           z = π.

• Save z in the file dat.
• Calculate x + y − z and save your answer in the file dat.
• Calculate x³ and save your answer in the file dat.
• Calculate e^−y and save your answer in the file dat.
• Calculate cos(zy) and save your answer in the file dat.

2. Matrices and Vectors Define the following matrices and vectors in Matlab:

                          

1                           −2

                          

,           x =  2 ,              y =  0 ,

                  −1 1

• Save x in the file dat.
• Save the second row of A in the file dat.
• Calculate x − y and save your answer in the file dat.
• Calculate Ay and save your answer in the file dat.
• Calculate A(x + y) and save your answer in the file dat.