Question: Why is this piecewise plot giving an error? Pls help

f(x) := piecewise(0 < x, x^(3/2)*sin(1/x), x = 0, 0, undefined);

gives me the following error:

Error, (in plot) incorrect first argument piecewise(0 < x, (HFloat(2.739493386336394e-116)+HFloat(2.739493386336394e-116)*I)*x^(3/2), x = 0, 0, undefined)

I just want to see the function plot. With Wolfram Alpha this is no deal at all!

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