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...
Shocking! Husband Catches Wife Cheating Red-Handed; wife threatened husband for court cases after be...
यस्य देवे परा भक्तिः यथा देवे तथा गुरौ । तस्यैते कथिता ह्यर्थाः प्रकाशन्ते महात्मनः प्रकाशन्ते महात्...
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All of them. Sexual exploitts are the reason they vanish as well. Mine turned out t to be making Por...
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