Is there a type of function where every point has exactly one tangent line passing through it? If yes, what is this type of function called?

Eg a parabola y=x² Jesus, of course, spoke in parabolas. In those days it was like the Beatles at Sh...
Eg a parabola y=x² Jesus, of course, spoke in parabolas. In those days it was like the Beatles at Sh...
I’M NOT GOING TO WAX POETIC, OR TYPE A THESIS ON THIS ONE. IT’S LATE, AND I HAVE TO GET UP VERY EARL...
#USAFiat #biometricdoppelgängerinterpretation #doppelgängerinterpretation #doppelgängerinterpretat...
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