Recent content by ChickenChakuro

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    Undergrad How is the solution for y[n+1] obtained using Euler's forward method?

    Bah, it is simple plug-and-chug. Should have known! Thanks!
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    Undergrad How is the solution for y[n+1] obtained using Euler's forward method?

    Hi all, I'm having trouble understanding a basic concept introduced in one of my lectures. It says that: To solve the DE y(t) + \frac{dy(t)}{dt} = 1 where y(t) = 0, using the Euler (forward) method, we can approximate to: y[n+1] = T + (1-T)y[n] where T is step size and y[0] = 0...
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    Period of f(t) = cos(3\pi t) + \frac{1}{2}sin(4\pi t) | T Calculation

    Oh, right, sorry, so the periods of cos and sin are 2/3 and 1/2, respectively, so the LCM of the two is 3?
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    Period of f(t) = cos(3\pi t) + \frac{1}{2}sin(4\pi t) | T Calculation

    So, the periods of the cos and sin are 3/2 and 2, respectively? I don't know if this makes any sense...
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    Period of f(t) = cos(3\pi t) + \frac{1}{2}sin(4\pi t) | T Calculation

    While I know this is the definition of a period, I'm not really getting it -- any other hints? Thanks.
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    Period of f(t) = cos(3\pi t) + \frac{1}{2}sin(4\pi t) | T Calculation

    Homework Statement What is the period T of f(t) = cos(3\pi t) + \frac{1}{2}sin(4\pi t) So, I think I have to find the LCD of 3pi and 4pi, which is 12pi. I don't think this is even close to correct though!
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    Are two signals that make up a periodic signal necessarily periodic?

    Indeed it was. Thanks for your help!
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    Are two signals that make up a periodic signal necessarily periodic?

    Homework Statement If a(t) is periodic and is composition of two signals such that a(t) = b(t) + c(t), then are b(t) and c(t) necessarily periodic? 2. The attempt at a solution I think that b(t) and c(t) must be! Is this correct?
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    Very simple proof of P(A) > P(B)

    Homework Statement Given that P(A|C) > P(B|C) and P(A|\bar{C}) > P(B|\bar{C}), prove that P(A) > P(B)Homework Equations How do I write the proof formally?The Attempt at a Solution This seems to me intuitively obvious. There are only two sample spaces, either C occurs or does not occur. In both...
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    Undergrad Which direction is skylight polarized at sunset?

    cepheid, Yes, this is what I am getting at. I was wondering if anyone could explain this to me.
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    Undergrad Which direction is skylight polarized at sunset?

    Hi all, can anyone help me understand in which direction skylight would be polarized at sunset, if the sunset was the in the West? I understand Rayleigh scattering, I'm just not sure about this concept.
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    Change format of equation of plane

    Guess what? Turns out it was a textbook orthographical error. It was supposed to be "line" not "plane." And I was stumped for so long!
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    Change format of equation of plane

    Ah ok, thanks for all the help!
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    Change format of equation of plane

    Why is it not parallel to the vector v = (1,1,1)?
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    Change format of equation of plane

    Hi all, I have a plane defined like this: x = 2 +t y = 2+t z = t How do I put it in the format: Ax + By + Cz = D? I feel stupid! :confused: