Mathematics 38 Exam II 1. (5 points) Determine whether the system x = -ty - z + t x z y = - - + 1 t t z = x - ty
Differential Equations March 10, 2008
is linear. If it is linear a . determine whether it is homogeneous, b. determine its order, and
Mathematics 38 Differential Equations Examination 1 February 11, 2008 No calculators, notes, or books are allowed. Please make sure all electronic devices you carry are turned off and put away out of sight. Remember to sign your blue book. With your
Mathematics 38 Differential Equations Exam I 12:001:20, September 29, 2008 No calculators, notes, or books are allowed. Please make sure all electronic devices are turned off and out of sight. Show all work and cross out work you do not want graded!
Mathematics 38 Examination 1
Differential Equations February 11, 2008
No calculators, notes, or books are allowed. Please make sure all electronic devices you carry are turned off and put away out of sight.
Remember to sign your blue book. With yo
Mathematics 38 Examination 3
Differential Equations April 7, 12:001:20
No calculators, notes, or books are allowed. Please make sure all electronic devices you carry are turned off and put away out of sight. Cross out work you do not want graded!
Mathematics 38 Examination 3
Differential Equations April 7, 12:001:20
1. (10 points) In parts a. and b. you are given a matrix A, a vector-valued function E(t) and formulas describing a collection of solutions of the nonhomogeneous system Dx = Ax
Mathematics 38 Final Examination Show all work and cross out work you do not want graded!
Differential Equations May 5, 8:3010:30
No calculators, notes, or books are allowed. Please make sure all electronic devices are turned off and out of sight.
12 February 2009
Summary page: Solutions to the ODEs f or the dynamics of springs.
Spring with mass m and stiffness constant k.
Solving , with and , should be pretty much automatic for us now. The roots of the corresponding characteristic polynomial are i
ECON 303 Chapter 3 Study Questions
1)
Money is
(a) anything that is generally accepted in payment for goods and services or in the repayment of debt.
(b) frequentlybut incorrectlyused synonymously with wealth.
(c) a flow of earnings per unit of time.
(d)