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...
Drones smuggled into Russia hit bases as far away as Siberia and the far east, destroying 41 aircraf...
Scientists used enamel proteins from 2-million-year-old teeth to find unexpected variation in Parant...
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There's no question this is American's best business-class product — and in some ways is even better...
Não, não é legal e nem ético. As sessões de Terapia não devem ser gravadas, a menos que haja consent...
i had a girlfriend who Broke up with her husband because he was addicted to porn and didn't have sex...
Hitman developer IO Interactive revealed the first look at James Bond game 007 First Light, which la...
The raccoon was confirmed to be rabid by the state laboratory, according to authorities.
One of the hottest names in chicken restaurants has a new owner.
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The 2001 Odyssey spacecraft captured a first-of-its-kind look at Arsia Mons, which dwarfs Earth’s ta...