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Alex Belyakov


Last seen: 4 years 前 |  自 2016 起处于活动状态

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2nd order ode on a non-rectangular region
Hi. I have a 2nd order pde r*f(x,t)=a1*x*df/dx + a2*x^2*d^2f/dx^2 + (x-c)df/dt (everything other than x and t are parameters), a...

8 years 前 | 1 个回答 | 0

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