MATLAB Assignment 1
Exercise 1.1 Code: log (20) / log (8) ans = Output: 1.4406
Exercise 1.2 Code: m = -3:0.4:12 Matlab adds 0.4 to the result of every single variable ranging from -3 and ending until it reaches 12. The function m(26) is the 26th function
Eigenvalues and Eigenvectors, More Direction Fields and Systems of ODEs
First let us speak a bit about eigenvalues. Defn. An eigenvalue of an nxn matrix A means a scalar (perhaps a complex number) such that Av=v has a solution v which is not the 0 vector.
Midterm Exam 1
October 24, 2008
Turn oﬀ and put away your cell phone.
No calculators or any other electronic devices are allowed during this exam.
You may use one page of notes, but no books or other assistance
MATH 20D - Practice Exam #1
The exam covers Sections 1.1-3.2 (inclusive) minus 2.8 and 2.9
closed book, no calculators, no computers, no notes, no headphones .
each problem is worth the same number of points
1) a) Find an integrating factor u for y’ - xy
Daisy Torres Math 20 D Moe Ebrahimi David Lipshutz B06 Thu 1:00 p.m.
a) Sketch (by hand, without using MATLAB) the direction field of the following differential equation: dy/dx = y/5. b) On your direction field, add a curve that approximates
m = -1:0.3:13
It created a list of values from -3 to 12 in increments of 0.4.
The syntax can be summarized as: list = begin:increment:end, where list is t