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...
Yes I have. And this is how it went. NOTE• I've gotta crippling reading impairment, for most intents...
Democrats focus on: Protecting Social Security, Medicare and Medicaid; good public schools; more sup...
In the market, in the cloister--only God I saw. In the valley and on the mountain--only God I saw. H...
“Why is the First Amendment referred to as a right to free speech instead of an immunity from punish...
If the Universe is 13.8 billion years old today, but different ages the farther we look back, what d...
To have a Mistress set me up for diaper dependence training and mental breaking lasting a minimum 90...
The extraordinarily intricate meal will change into a mega form when viewed through an app
The reunion special promises "messier drama, holier prayers, and curlier extensions" as the women of...
Trump may have given Japan's Nippon Steel some last-minute leverage.
A team of researchers with a variety of backgrounds and affiliated with multiple institutions in the...
The Lady Vols nearly eliminated the Bruins off a technicality, after a batter forgot to step on home...