New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here


by: Madison Gottlieb Sr.


Madison Gottlieb Sr.
GPA 3.72

J. Morales

Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

J. Morales
Class Notes
25 ?




Popular in Course

Popular in Mathematics (M)

This 3 page Class Notes was uploaded by Madison Gottlieb Sr. on Tuesday October 13, 2015. The Class Notes belongs to MATH 2090 at Louisiana State University taught by J. Morales in Fall. Since its upload, it has received 35 views. For similar materials see /class/222626/math-2090-louisiana-state-university in Mathematics (M) at Louisiana State University.


Reviews for ELEM DIFF EQ & LIN A


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/13/15
MATH 2090 PRACT1CE PROBLEMS FOR TEST 1 SEPTEMBER 2011 Use short precise and complete English sentences to explain your an swers Supply enough words so that the steps in your reasoning can be easily followed Credit may will be withdrawn from answers that are not properly and clearly explained Please note that no books notes or cal culators are permitted for tests 1 Verify that yx 0 and yx x6 are both solutions of the initial value problem d y 6xy23 y0 0 dx Explain why the Existence and Uniqueness Theorem does not ap ply in this case 2 Solve the initial value problem dyZt 0 1 dx yanx y 3 Find the general solution of the differential equation dy1 2 dx xyx2139 4 Solve the differential equation 2x2 x y y 3 5 Solve the initial value problem 4 9 1 0 y xy x3 y 6 Find the general solution of the differential equation dy xy xz2y2 dx 2x y 7 Solve the initial value problem x4yy392x y y1 1 8 Find the general solution of the Bernoulli differential equation I 1 3 y Etanxy 2y s1nx 9 Show that the differential equation 2xy 1dx xzdy 0 is exact and nd its general solution 10 Solve the initial value problem ny x2 d d 0 1 1 x1 x x1 y y Hint Find an integrating factor to make the equation exact 1 1 2 0 11 j 11 LetA 2 0 2 2 andB 0 1 FindAB 1 2 1 1 0 12 Let A 2 f2 Find all values of a and b for which A2 A 13 Reduce the matrix below to reduced row echelon form and deter mine its rank 1 2 2 6 1 2 4 1 3 0 2 4 3 9 1 39 1 2 0 0 0 14 Solve the following system oflinear equations x1x22x3 2 xl x2x3 2 1 4x1 2x25X3 1 15 Solve the system oflinear equations 3x25X3ZX4 5 x2 2X3 X4 2 x1 9xz 13xg 4X4 14 2x1 3x2 X32x4 3 using GaussJordan elimination ie putting the associated aug mented matrix in reduced rowechelon form 16 Determine the value of h such that the matrix below is the aug mented matrix of a consistent linear system of equations OJNH C JgtIJ 0 1 1 4 2 h 17 Calculate the inverse of the following matrices if it exists 1 2 3 1 2 1 a A 2 5 9 b B 2 5 1 3 7 11 3 7 2 18 A n x 71 matrix A is called orthogonal if A 1 2 AT Show that the matrix cosH sinH sinH cosH is orthogonal 19 Compute the signature ofthe permutation 2 16 54 3 1 5 2 3 1 7 3 1 20 Let A 2 1 0 1 Compute detA Is A nonsingular 4 11 5 5 Justify your answer


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Anthony Lee UC Santa Barbara

"I bought an awesome study guide, which helped me get an A in my Math 34B class this quarter!"

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.