How to plot this equation

2020 5 5
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更新时间：2020 5 5
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Hello.I solve a equation with two methods. First method(analytical) u(x)=-0.5*((x^2)*lnx)+0.75*x^2 Second method (finite element) : i found u values numerically. How to plot the two graphs and how i combine in one figure to see difference

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