if you change the x-terms to r-terms, for radius, you should get the 3D-analogs of the 2d conic sections. The r-term then stands for the radius of the 2D cross-section of the object in the y-normal-plane. For example, the equation for a sphere is y^2+r^2=R^2, where R is the radius of the sphere.
i have checked but nothing as good as Khan could explain, I wonder if he does do LSAT logic, I don't see why he wouldn't- How could i ask him, i'v emailed and comment numerous times but i get no response
I believe there is a mistake in this video. at 6:32 when he factors out a -2, if you were to distribute that negative 2 back into (x+6x+8) you would get -2x -12x -16. NOT -2xSQUARED -12x -16. Unless i am missing something critical can someone please explain to me why that is happening?
Do you do LSAT logic; really want to know! Answer ur comments KHan! lol Excellent video as always. You should be paid for this. Can i donate? if so where?
@LancerZEV Yeah that's right !
Sal wrote
0 = -2x²-12x-16
0 = -2(x+6x+8)
But the second line should be "0 = -2(x²+6x+8)"
You sir are a king amongst men and i am now passing my summer algebra and therefore able to go to Amsterdam. i salute you.
Dude words cant even describe how much you helped me. I understand all this now. Thanks a bunch.
I worship this channel
so..I'm a major procrasinator and math is not my thing and this just makes it ten times easier!! love this channel
Thank you Sal. I couldn't understand it from the books. Now I do. Thank you.
if you change the x-terms to r-terms, for radius, you should get the 3D-analogs of the 2d conic sections. The r-term then stands for the radius of the 2D cross-section of the object in the y-normal-plane.
For example, the equation for a sphere is y^2+r^2=R^2, where R is the radius of the sphere.
You mean, in a 3D world, not i a 3D world.
But Sal, that was a great vid!
I'm in AP Calculus in high school, trying to tutor my girlfriend, and I am still having trouble comprehending this, lol.
where is the next section where conics theory & how they came about is talked about??
Great video sal,but in 6:56 there is a slight mistake though in writing it didn't appear as -2 it appeared as though.
Your a good pal sal. Thanks for the help!
Nice presentation. Thanks for posting.
Go on his TH-cam page and on the top it has a donate button you can click on.
i have checked but nothing as good as Khan could explain, I wonder if he does do LSAT logic, I don't see why he wouldn't- How could i ask him, i'v emailed and comment numerous times but i get no response
I believe there is a mistake in this video. at 6:32 when he factors out a -2, if you were to distribute that negative 2 back into (x+6x+8) you would get -2x -12x -16. NOT -2xSQUARED -12x -16. Unless i am missing something critical can someone please explain to me why that is happening?
Do you do LSAT logic; really want to know! Answer ur comments KHan! lol Excellent video as always. You should be paid for this. Can i donate? if so where?
What is the conic section of equitation is this? Please help
3x²+6x+4y=18
??
oh ok thanks i see it now, do you know if khan does LSAT logic?
how will you do this?
9x2-130x+16y2-160y-24xy+125=0
Conics in 3D would be interesting too. Because we live i a 3D world.
2:47 I'm confused. Why is it (y+2)^2? Wasn't it just 4y/2= 2, so (y-k)^2?
@fleshcookie He forgot to write it but he didn't forget it in his head so the rest of the equation is solved correct
I don't think so but I'm sure it's somewhere else on TH-cam.
Thanks a lot Sal! This was really helpful!
However, it is kinda hard that the title is in Spanish but there were no Spanish subtitles available :/.
would you tell me which is the software?
Khanic Identification 3 COLD
Why should it always equal zero? The x and y
Filip Shumilo I feel ya
@tropicalmist999 he's probably gotten thousands of emails so it's tough for him to reply.
ur fucking awesome