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'grid fix'
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DPotoyan authored Oct 16, 2024
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6 changes: 4 additions & 2 deletions ch03/fourier_transform.ipynb
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Expand Up @@ -28,7 +28,7 @@
"\n",
":::\n",
"\n",
"### Fourier coeffiecients\n",
":::{admonition} **Fourier coeffiecients and orthogonality of sin and cos functions**\n",
"\n",
"- Using the orthogonality property of the cos and sin functions we can determine an expression for the coefficients of the Fourier Series. By integrating the Fourier Series over the interval [-${\\pi}$,${\\pi}$], we can determine an expression for $a_0$. Over this interval, the sums will vanish, as we are intergrating the $\\sin$ and $\\cos$ functions over one period. Thus, we are left with\n",
"\n",
Expand All @@ -50,7 +50,9 @@
"\n",
"- To determine the values of the $b_n$ coefficients we multiply by $\\sin(mx)$. Similarly to the $a_n$ coefficients, due to the orthogonality property, the only term that does not vanish on the right-hand side is $\\int_{-{\\pi}}^{\\pi}b_n\\sin(nx)\\sin(mx)dx$ for $m=n$. Thus, solving for $b_n$\n",
"\n",
"$$b_n = \\frac{1}{\\pi} \\int_{-{\\pi}}^{\\pi} f(x)\\sin(nx)dx \\,\\,\\,\\,n=1, 2, ...$$\n"
"$$b_n = \\frac{1}{\\pi} \\int_{-{\\pi}}^{\\pi} f(x)\\sin(nx)dx \\,\\,\\,\\,n=1, 2, ...$$\n",
"\n",
":::"
]
},
{
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7 changes: 2 additions & 5 deletions ch03/note05.md
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Expand Up @@ -150,13 +150,10 @@ $$\psi(x) = \sum_n c_n \Big(\frac{2}{L}\Big )^{1/2} sin \Big (\frac{n\pi x}{L} \
$$c_k = \Big(\frac{2}{L}\Big )^{1/2} \int sin \Big (\frac{k\pi x}{L} \Big )\psi(x) dx$$
:::





::::


### Probabilistic meaning of linear superposition.
### Probabilistic meaning of linear superposition

:::{admonition} **Coefficients describe probability of observing distinct states**

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