Recent content by johnchau123

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    Material dispersion calculation (optical fiber)

    Material dispersion in optical fiber is defined as D = (-λ/c)×(d²n/dλ²) λ is wavelength, c is speed of light and n is refractive index. I was given a graph of λ²×(d²n/dλ²) against λ, refractive index of core of fiber, index difference and diameter of the core and cladding. What I would like to...
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    Can Both Ligands in Ru(phen)2(NCS)2 Bind via the Same Atom?

    [SOLVED] Linkage isomer in complexes I would like to ask a question on linkage isomer on complexes. Say, I have a complex Ru(phen)2(NCS)2. NCS can exhibit linkage isomer. Suppose I focus on linkage isomerism only, regardless of optical isomer or geometrical isomer. Surely, the complex can exist...
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    Matrix Operation: Why n^2 Steps Needed for Elimination of First Row?

    The following link is a picture which shows what my note says. http://www.badongo.com/cn/pic/526793"
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    Matrix Operation: Why n^2 Steps Needed for Elimination of First Row?

    But i have the following interpretation Eliminate the first entry and this is n multiplication Then, I do it n-1, including the first time. So, I think it is n*(n-1). I am quite not sure about this. :confused:
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    Matrix Operation: Why n^2 Steps Needed for Elimination of First Row?

    In my note, it said that Counting multiplication and division only, in solving linear equations (matrix operation), Elimination of first row: total n^2 operations So, forward elimination operations for the matrix is Σ(2 to n) k^2 = n*(n+1)*(2n+1)/6 I have tried to solve the...
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    Adams-Bashforth and Adam-Moulton

    Hi, I am doing a question on using Adams-Bashforth method as predictor and Adams-Moulton method as corrector. I would like to ask after we find y_n+1 by corrector method, do we have to re-calculate y'_n+1 in order to find y_n+2, or we use the y'_n+1 originally found by the predicator method to...
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    Solving differential equations

    Sorry for posting the questions in a wrong area, I will post my homework questions to an appropriate area next time. :smile: Actually, the question requires us to use Runge Kutta method to solve the question, a numerical approach. However, I am confused if the question is a system of DE or...
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    Solving differential equations

    I have the following question. I am not sure if the question is a system of differential equations or it is actually 2 questions. The question is as follows. Solve the initial problems x' = y, x(0)=0 y' = -x, y(0)=1 for 0 < t < 1 . Thanks. :smile: