How to find asymptotes, tangent line and locate significant points in a graph f: y=e^-x.sin^2x

Please help how to find asymptotes,tangent line and locate significant points in a graph f: y=e^-x.sin^2x

Plot f:

x=0:1e-3:10,

y=exp(-x).*sin(x).^2;

plot(x,y),

[Ameer Hamza]

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