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 now understand that the most important place on Earth is not on land, but at sea,' says naturalis...
It is very lazy to make such broad generalizations about men/women/blacks/gays/etc.. Everyone is an...
Because you’re confusing two different things. I hate censorship. That is, I think the government ha...
This happened in my second year of university. I had been going out with my girlfriend, now wife for...
Mostly that is due to relative humidity. Hot humid days you tend to sweat more than when the day is...
Could be any number of reasons, but you didn’t give any information to help. What does your training...
The original Hermès Birkin bag, which acted as the blueprint for what would become one of the most d...
Musk's companies rely on the US government for their success, Ark Invest CEO Cathie Wood says.
When they use those terms, they are not trying to convert newcomers to the FE belief. They are signa...
By assuming that other planets are tiny balls suspended in the sky as opposed to being planets like...
The use of Gilead’s Trodelvy and Merck’s Keytruda together could be practice-changing based on the r...