| (3) life is what happens while you are busy making other plans. |
[Dec 8, 2011 | 9:02pm] |
oh my god.
the world lost a fucking genius today. rest in peace, john lennon.
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| (2) hastily scribbled in the journal |
[Nov 6, 2011 | 4:43pm] |
5:00pm → 11:40 pm ✈ LHR-CAI (BA 155)
gate closes at 4:30
need to book taxi, schedule return flight, pyramid visit (giza?)
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| (1) just trolling with her math. no big deal~ |
[Sep 17, 2011 | 8:43pm] |
a solution of a first order quasilinear PDE:
form 1: f(x, y)wx + g(x, y)wy = h(x, y, w)
∂w/∂x + a(∂w/∂y) = f(x)g(y)h(w).
∫dw/h(w) = ∫f(t)g(y − ax + at)dt + Φ(y − ax), where Φ(u) is an arbitrary function, x0 may be taken as an arbitrary value.
- integral should be taken across x0 and x
other forms to consider:
wx + awy = f(x)w + g(x)wk
let a be an arbitrary coefficient
wx + awy = f(x) + g(x)eλw too advanced? hold off until next semester
- differentiate between a linear / quasilinear / nonlinear PDE.
let ΦC1 and ΦC2 be partial derivatives
see invariant linear spaces by svirshchevskii for reference
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| !app |
[Aug 31, 2011 | 6:37pm] |
you are not some saint who's above
giving someone a stroll through the flowers,
you've got so much more to dream of.
oh girl, sail her, don't sink her.( Read more... )
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