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Rebecca Roper

Last seen: 4 years 前 | 自 2020 起处于活动状态

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solving a system of 4 second order differential equations
i have the following first order equations z1=x, z2=dx/dt, z3=y and z4=dy/dt which relate to the following second order equati...

4 years 前 | 2 个回答 | 0

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