Recent content by LongApple

  1. L

    How to get (v1+v2)/n for odd n with minimum resistors

    For example, the simplest case n=3 I am even stuck on much less the general problem we can start with that and evidently it may be able to be soled with only two or three resistors if you are clever Also we are not allowed to use op amps only resistors and we are given two voltage sources...
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    What type of power cord do I need for outlets in America?

    https://i.imgur.com/O6RtcIK.jpg I'm in America. Outlets don't look like this. Can't tell if the above outlet which I have is type E or F and not sure if America has type A or B. What product do I buy on amazon to deal with this?
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    What is the significance of j2 in this problem?

    What's j2 in this problem? 1. Homework Statement Homework Equations The Attempt at a Solution a. What's j2 in this problem? b. How did we use the fact that we have a unit impulse? c. What are our first thoughts and strategies when seeing the problem ? What is our strategy? It looks...
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    Clever Method/tool remove wire from breadboard no distortion?

    1. When you grab the wires in the breadboard with the pliers, where do you like to grab? If you grab one end, you may bend the other. if you grab he middle, you might make a V shape out of the wires if they are long enough. "I like these miniature needle nose pliers . The jaws are flexible...
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    Clever Method/tool remove wire from breadboard no distortion?

    By pull out the wire I mean pull out wire out of the breadboard. Without bending it. So I can preserve its length and shape and easily reuse it for that exact same length later if I'd like to. I've found it useful at least to keep a dumby breadboard on hand whose sole purpose is to hold wires of...
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    Clever Method/tool remove wire from breadboard no distortion?

    Distortion I mean -> bending, curling Basically, I'll pull out a wire with my finger nail or a single claw from the oscilloscope probe. Unless the wire is short, it will often bend or distort in the process. There must be a much smarter way to do this. One way I thought was if there was someway...
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    Leaky Tank Differential Eqn Problem

    Homework Statement http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-003-signals-and-systems-fall-2011/assignments/MIT6_003F11_sol01.pdf http://i.imgur.com/8qj5cWE.png #6 Part B Homework Equations None[/B]The Attempt at a Solution Don't understand why we care about...
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    Discrete Signals/Systems Even/Odd Problem

    Homework Statement http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-003-signals-and-systems-fall-2011/assignments/MIT6_003F11_sol01.pdf [/B] Homework Equations None[/B] The Attempt at a Solution To be honest, I don't think you can prove something is impossible...
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    Graduate Have you done PA=LU factorization?

    ""Why is dividing by big numbers bad?" Read again - dividing by small numbers is to be avoided" Yup I read that the first time. Now - why do we want this or even if we want it why is it necessary? Maybe it is obvious to you not in wikipedia
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    Graduate Have you done PA=LU factorization?

    ""Why is dividing by big numbers bad?" Read again - dividing by small numbers is to be avoided" Yup I read that the first time. Now - why do we want this or even if we want it why is it necessary? Maybe it is obvious to you Aside from inconvenient I don't see why big number necessarily...
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    Graduate Have you done PA=LU factorization?

    1. Why is dividing by big numbers bad? Aside from inconvenient I don't see why big number necessarily necessitates row swaps 2. 10 is already the biggest available" <- available of _____ ? Of the numbers down the column I'm a bit confused about P Given a matrix A, does it always have a fixed...
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    Graduate Have you done PA=LU factorization?

    So as a start, why do we care at all that 10 is the largest?
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    Graduate Have you done PA=LU factorization?

    I'm trying to figure out what this quote means and what our strategy is just looking at the matrix what kind of permutations we need to do. Quotes: "The first permutation step is trivial (since the pivot element 10 is already the largest). The corresponding permutation matrix is the identity...
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    How to make/find USB Bracelet with programmable buttons?

    Here's a start of what would be great scrolling through tabs or windows fast Ctrl z windows D Open onenote Open pdf annotator windows key left (to shift a window left) windows key right http://www.tcbmi.com/strokeit/ Funniest name I have heard So if I don't want to learn scripts, what would...
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    How to make/find USB Bracelet with programmable buttons?

    How do I edit my post? Or something like a wearable leg keypad that can be turned off and on with a switch.