The University of Texas at Austin
PGE 310:Formulation and Solution in Geosystems Engineering
Homework #2: Matrix operation and Plotting with MATLAB
SOLUTION
1.
For all of the following sections use a single command in MATLAB to create the answer. Print out your
commands and the results and box/highlight your results. (40%)
(Part a 5 Pts others 2.5 Pts)
a.
Create a vector, a, that starts at 10
10
, ends at 1, decreased logarithmically, and has 5 elements. You may want to
use the command “format long” so that digits aren’t truncated. After the problem, you may want to go back to
“format short”
b.
Use a built-in function to create a vector, b, with 10 elements. Elements 1 to 5 start at -5, end at -3, and increased
by 0.5.
Elements 6 to 10 start at 10, end at 14 and increased by 1
c.
Create vectors
u
,
v
,
w
and
x
.
4
2
3
1
u
2
5
3
1
v
3
4
1
2
w
5
1
2
3
x
d.
Create a 4by4 matrix, A, which is a combination of matrices
u
through
x
such that the first column is
u
the second
column is
v
, the third column is
w
.and the forth column is
x
e.
Create a 4x4 matrix, B, of random numbers ranging from -2 to 4

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