Recent content by RoshanBBQ

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    Solving Delta Function Convolution with Sin Wave

    That is just the sum of two Dirac delta functions. f_1(x) = \delta(x) + \delta(x-2) Just write out the convolution integral and use the sampling rule.
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    Are You a Vegetarian? | Poll & Discussion

    I would like to eat the same things my ancestors ate. They ate meat, so I eat meat. The reasoning is that on average, people who handled that diet best survived more often than people who did not mesh with that diet. I am a product of this procedure repeated many times, indicating there is a...
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    Importing data from text file into Matlab

    http://www.mathworks.com/help/techdoc/ref/f16-5702.html#f16-14516 MATLAB has a set of low-level file reading commands, which can do practically anything given some semblance of structure in the data and enough time and code length.
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    Importing data from text file into Matlab

    What is the context? If you just need to do this once, by far the simplest approach is to manually break the file up into two text files with only the data in it. So make matrixA.txt with 1 2.000000000000e+00 0.000000000000e+00 1.000000000000e+00 0...
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    Solving Delta Function Convolution with Sin Wave

    \delta(t)\delta(t-2) = 0 And the convolution of a function with zero is zero. Your definition of the convolution integral appears incorrect. I suspect you are not giving us all the details, because the problem makes no sense. What was the original problem? (I know there was one since the...
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    Griffith's Solutions Manual: To Copy or not to Copy?

    Yes, it's true not everyone does it. But after I have the manual, I often ask people I like even a little bit whether they want it. The answer is always "Yes" or "I already have it." I have to point out also I have told most professors I have that I have the solution's manual. For one teacher...
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    Griffith's Solutions Manual: To Copy or not to Copy?

    I will say absolutely everyone in all of my classes has solution manuals (when they're for a book where the solution manual is found with a simple Google search). I will also say studying is more efficient with a solutions manual - you can do extra problems and check them as well as mentally do...
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    Using Magnetic field to repel a paper plane AP Physics Project help?

    All I'm going to say is when you deal with an outlet, you should always put a fuse in your circuit. Go by a local electronics store and pick up a 3 A fuse, and make sure it is installed before you ever plug your circuit into the wall. It will be something like this...
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    Finding Impulse Transfer Function with Impulse Invariant Method

    The idea behidn impulse invariant method is to compute a discrete impulse response, h[n], from the continuous impulse response, h(t), by sampling h(t) every T units of time. h[n] = Th(Tn) The discrete impulse response is the z-transform of this quantity. It's troubling that the problem statement...
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    MATLAB: Finding the 5th Root using Newton's Method

    Your code doesn't even compile. What in the world does while n == 1:i mean? You should instead put the E term in the while statement alongside the 'break' condition. Here is a nice skeleton code I have written % Define parameters endCondition = 0.00001; E = inf; % Initialize such that while...
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    An easy? Matlab Problem involving matrices

    Your best bet is to use matrices instead of a for loop. % define input N = 100; x = 1:0.5:5; a = sqrt(2.8); % Create big matrices X = repmat(x, [N,1]); n = repmat( (1:N).' ,[1,length(x)]); % Calculate Sn SN = prod(1-X.^2./(n.^2-a^2)); % Calculate inf values Sinf =...
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    Is it normal to forget most previously learned material?

    I have for a long time thought students who could easily make As get Bs or lower because they don't read the textbook and only use the lectures! Though I didn't immediately materialize it to apply to this topic at hand, I have to say I agree with this. The kinds of things I forget are the kinds...
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    Help Explaining Integration Trick

    It wasn't a problem. It was a statement in a textbook on estimation. I am the type that wants to understand all facts in a textbook as opposed to memorizing the result. I am researching the topic for my masters, so understanding is of greater import than when reading a textbook simply to pass a...
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    Help Explaining Integration Trick

    When I said 'switched', I meant it wasn't only switched, as one would believe with such a blank statement. It was rewritten with two different integrals that were in reverse order. So yes, 'the order of integration' was switched in that zeta went first. However, the beginning integral was not...
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    Help Explaining Integration Trick

    It's quite simple when you draw the tau-zeta plane. I find the wording in the textbook to be misleading. The order of integration wasn't 'switched'. Entirely new integrals were written that represent the same quantity. In case someone finds this thread, here is the solution: Tau goes from...