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...
31 years ago, when my son was in school; there was this child who was paraplegic and had to use a mo...
Apart from the fact that bestiality is a criminal offence in many ares - there is a ‘rape’ element I...
The American mobile phone number format is xxx-xxx-xxxx. +1 NXX-NXX-XXXX N=digits 2–9, X=digits 0–9...
It's funny you asked that because a lot of them that are leftover single guys as they age? They turn...
Every living thing has a limited life span. Not to mention species other than human beings, we live...
With no knowledge of the subject, or your level of English, giving presentations and editing it's ha...
What is the sum of X+XX+XXX+XXXX? It’s a matter of interpretation. Given the use of upper case, I pe...
You could spend a lot of money on lab tests to get a sense of how fast you’re aging, but science sug...
Because Biden’s regime was terrible in every way, unless you are an illegal alien or transgender. He...
Hello, So, I’ve been reading peoples answers because I’ve been feeling anxious about this situation....
Neighbors never try to tell me what to do because I’m crazy as hell. This busybody one next door, wh...