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...
Read patiently to clear your mind of baseless overthinking. What is the use of thinking? What's the...
A cruel reality is that so far, no country has gained wealth through democracy, but a large number o...
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Measles is extremely contagious, with more than a thousand cases now confirmed in the United States...
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Ah, society and its norms—always looming, always judging, isn't it? Let me take you back to an incid...
Brendan Nelson to take over as interim head of UK bank’s board
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Assuming that you Mr Anal In Mouth (did I spell your name right?) are American, go live up to your n...
This is not how you embellish a saree. Today many women is wearing like this. Who created it? This...
Japanese researchers have quietly developed a new material that skips cement entirely—and it’s made...