Safari Live - Day 76 | National Geographic

Let g of x be equal to the definite integral from 0 to x of f of t dt. What is an appropriate calculus-based justification for the fact that g is concave up on the open interval from 5 to 10? So, concave up! Before I even think about what it means to be …

We are asked which of the following correctly identifies the areas of consumer surplus, producer surplus, tax revenue, and deadweight loss in this market after the tax. So, pause this video, have a go at it. Even if you struggle with it, it’ll make your b…

Neutron stars are one of the most extreme things in the universe. They’re like giant atom cores. Kilometers in diameter, unbelievably dense and violent. But how can something like this even exist? The life of a star is dominated by two forces being in ba…

[Music] If you’ve ever browsed self-improvement forums like on Reddit, then you’ll often come across some pretty good advice, some pretty questionable stuff—no doubt. But every once in a while, there’s a little nugget of wisdom that sticks with you, and …

The figure above shows a string with one end attached to an oscillator and the other end attached to a block. There’s our block. The string passes over a massless pulley that turns with negligible friction. There’s our massless pulley that turns with negl…

My book is 58 pages. I have already read 13 pages. I plan to read five pages each day until I finish the book. Which equation could I use to find out how many days, d, it will take to finish reading the book? So pause this video and see if you can figure…