Recent content by mmont012

I am taking a linear algebra class, and it has a required lab associated with it. Here is the following problem that I must solve using Matlab 1. Homework Statement Write a function using row reduction to find the inverse for any given 2x2 matrix. Name your function your initial + inv(M), the...

Homework Statement Use the method of variation of parameters to find a particular solution Homework Equations https://flic.kr/p/NqhtyQ The Attempt at a Solution https://flic.kr/p/NicCbN [/B] Can some find my mistake? The answer is just suplosed to be - 2/3te^-t[/B]

All of the examples in my textbook and examples that the teacher worked out in class have dealt with boxes; whether it be minimizing cost of materials or finding the dimensions of a box with and without a lid. The two equations that I have listed above are just the generic equations that the...

The equations that I posted are just the general equations for volume of a cylinder and the surface area of a cylinder. I don't know how to go about setting up the equations to find what I need to. Yes they should have 0.2 and 0.3 in them, but I don't know where to put them. This is the first...

Homework Statement Julia plans to make a cylindrical vase in which the bottom of the vase is 0.3 cm thick and the curved, lateral part of the vase is to be 0.2 cm thick. If the vase needs to have a volume of 1 liter, what should its dimensions be to minimize its weight? Homework Equations...

Thank you, and sorry about the confusion. I'm using my phone and its acting up. Next time I'll be sure to add ().

Homework Statement Find the general solution y"+3y'+2y=0 Homework Equations y(t) =c_1e^r_1t + c_2e^r_2t The Attempt at a Solution a=1 b=3 c=2 r^2+3r+2=0 (r+2)(r+1)=0 r_1=-2 r_2=-1 General solution: y(t) =c_1e^(-2t)+c_2e^(-t)I was wondering if the order mattered. The answer in the book is...

Thank you for your reply. Once I get to school tomorrow I will try it out. As for not having experience before this class, no prior knowledge in programming was necessary to take it. The reason that I decided to enroll in it, is because I thought that it would help me have a better...

Hello, I am currently taking ODE's and the class has an optional lab to accompany it. So far in the lab we've been doing some pretty basic stuff. But we've finally moved on to entering in differential equations, and I'm confused. 1. Homework Statement dydx+2x=2y How do I enter this equation...

Consider the differential equation dy/dt=-ay+b Where both a and b are positive numbers. a) solve the differential equation. b) sketch the solution for several different initial conditions. c) describe how the solutions change under each of the following conditions: i. a increases ii. b...

I am completely lost. I just started my O.D.E course this week and I'm already sinking. After the first lecture I was reading through the chapter (because that normally helps) and I became even more confused. I looked at the homework, and I didn't even know where to start. Then I realized (with...

She gave me a new piece of information; the distance of the cluster is 1.7 kpc. Thank you all for your help! It is truly appreciated!

The tables show the location of individual stars that are in a cluster around a more massive central star. And she wants the data for all tge stars that are 1.2 parsecs away from the center one but the website requires that I put it in arcminutes (90 max). I told her that I thought that I was...

Can someone help me convert 1.2 parsecs into arcminutes? I'm currently doing an internship that does astrophysics research and the grad student told me to do this conversion. I need it to get the data that I need to make tables, but I'm just confused. I asked for help but they said that this...

Hello All, I am confused about something, and I am hoping that someone can clear this up! The more that I talk to people in "STEM" fields, the more it seems that their education sequence is to go from bachelors to PhD and they just skip the masters entirely. Is this common? Or am I just...