# PDE:Mathematical Modeling

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## Mathematical Modeling

solution Let the temperature inside a solid sphere be a function only of radial distance from the center and time . Show that the equation for heat diffusion is now **Failed to parse (syntax error): {\displaystyle u_t = \ u(u_{rr}+2u_r/r)\,}**
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solution A ball is thrown straight up from the ground. How high will it go?