Practice for Exam 2 - Math 3130 Intro to Linear Algebra
Fall 2011 - Dr. Radu Cascaval
Exercise 1
Given the matrix
1 x x2
A = 1 2 4 ,
1 3 9
(1) Compute det(A) by the co-factor expansion method.
(2) Find all values of x such that A is not invertible.
(3) Us
Practice for Final Exam MATH 235, FALL 2011
Dr. Radu C. Cascaval
Below are sample problems for the Final Exam. Other problems can be found in the previous exams,
homework assignments, end of each section covered, and the review exercises at the end of eac
Practice for Exam 1
Math 3130 - Intro to Linear Algebra
Fall 2011 - Dr. Radu Cascaval
1. In each case the augmented matrix for a system of linear equations has been reduced by row operations to the
given form. For each matrix answer the following:
(a) is