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View AllWorked example: alternating series | Series | AP Calculus BC | Khan Academy
What are all positive values of P such that the series converges?
So let’s see, we have the sum from n equal 1 to infinity of ((-1)^{n + 1} \frac{p}{6^{n}}).
There’s a couple of things that might jump out at you. This ((-1)^{n + 1}) as (n) goes from 1 t…
Deriving Lorentz transformation part 2 | Special relativity | Physics | Khan Academy
We left off in the last video trying to solve for gamma. We set up this equation, and then we had the inside that, well, look, we could pick a particular event that is connected by a light signal. In that case, X would be equal to CT, but also X Prime wou…
Frogs Come Alive After Winter Thaw | National Geographic
NARRATOR: While the rivers and ponds are melting, the ground remains frozen. And under the leaf litter, someone is pulling off a miracle. [intriguing music] This wood frog is frozen solid. Even his eyes are iced over. There’s no pulse, no breath. Slowly t…
China is Uninvestable.
Stocks based in the world’s second largest economy are uninvestable again. Bernstein sales trading desk’s Mark Schilsky said in a note on Monday, “This idea of Chinese stocks being uninvestable has been a recurring theme in the media over the past few wee…
Pushing Limits With America's Strongest Disabled Woman | National Geographic
I’m a very strong person, and I’m not just talking like muscles. I’m a very stubborn person, and stubborn is a really good word for me because I just don’t give up. I love when someone tells me, “Oh, you can’t do that.” Oh really? Watch me.
[Music]
So, …
THE DOWNFALL OF CREDIT CARDS | HOW TO PREPARE
What’s up you guys? It’s Graham here. So as I’m sure many of you know by now, I am a huge proponent and believer in credit cards. I think they’re a great way to leverage your money, get purchase protection, get cash back, collect points, travel for free, …