UA-cam is the Best School in the world. Seriously If youtube can just work with the government, This Platform could be very VERY profitable for Google and Very Helpful for students.
It's an ancient comment, but just in case anybody stumbles upon it - one must differentiate between Real Numbers (where ∞ isn't a valid element) and Expanded Real Numbers (Where ∞ *is* a valid element and in certain contexts can be treated as number). In the former, way more common set, division by 0 is undefined, in the later it's precisely +∞. The answer depends on the context
pi^4 is pi to the power of 4 so cos(pi^4) = -0.13 where as cos(pi/4) is .707 (you were calculating in degrees, not radians. You need to make sure your calc is in radians) which is rt(2)/2 (refer to the unit circle).
so khan academy can make a tutorial about how to have beautiful writing with mouse only
lol it’s a drawing tablet
It's a electronic oen
Dum
😭😭😭
My professor made everything confusing. And when I watched it, I suddenly remember what I learned from Trig
UA-cam is the Best School in the world. Seriously If youtube can just work with the government, This Platform could be very VERY profitable for Google and Very Helpful for students.
Alexandrewvice I don't think that would work out so well. and it's unnecessary
I mean it already is very profitable for google and very helpful for students lol
The government would ruin it, like they do most things
Sometimes I look at Khan Academy videos in my subscription box and think, "Hasn't Sal covered this topic 7 times already?" I still watch, regardless.
4:30 I learned that the limit is +∞
in the unit circle it's (0,1)
It's graphic is going to near of Y (infinity), but it won't touch the Y in the end of the this approach
It's an ancient comment, but just in case anybody stumbles upon it - one must differentiate between Real Numbers (where ∞ isn't a valid element) and Expanded Real Numbers (Where ∞ *is* a valid element and in certain contexts can be treated as number). In the former, way more common set, division by 0 is undefined, in the later it's precisely +∞. The answer depends on the context
Correct, and all these years later the math makes more sense
I really like your writing.
What is that pointer dude, are you aiming
Hahaya
Let my dude be 😭
how do I make a table of values when the limit approaches π??
How do you know if / when a point is in a specific domain?
*keeps watching
"Oh"
Nevermind. Thanks for making these videos and making them available around the world for free. They're great
I think the previous pointer was fine, this one seems a little too big.
.
IKR The hell is this?
i dislike that pointer, it reminds me of a reticle. It's also very distracting.
Thanks for awesome content
00:35 " all trig functions are continuous over their entire domain " what about f(×)=tan(×)
yes. the asymptotes are not part the domain for the tangent function
easy to see that you are sniper
Nice crosshair
I know these are basic concepts, but textbook somehow makes this complicated
First-person maths
can you solve where my limit is approaching
Please why's cosine rule using r/4
plz upload iit question plz sir
sunny bharodia dude there's no IIT in USA. He's only gonna post universal questions which can work internationally
👍🏻
is this guy samuel jackson?
it is looking wierd(pointer)
I CANT UNDERSTAND ANYTHING
i don't really get some of the answers..... cos(pi^4) is 0.999... why are you saying it's 0.707....
pi^4 is pi to the power of 4 so cos(pi^4) = -0.13 where as cos(pi/4) is .707 (you were calculating in degrees, not radians. You need to make sure your calc is in radians) which is rt(2)/2 (refer to the unit circle).
The black background makes me headache😅