- Box Office – Frozen 2, Knives Out – Thanksgiving 2019
- Polynomial division | Polynomial and rational functions | Algebra II | Khan Academy

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- Box Office – Frozen 2, Knives Out – Thanksgiving 2019
- Polynomial division | Polynomial and rational functions | Algebra II | Khan Academy

Thanks for posting and i love watching this but sad to say that i am starting to lose you around 3.48… hahaha sorry… need to rewatch few more time i guess.

@HubertSvab91 It is definitely South Slavic. Czech would have slightly different accent.

there's an error, when she eliminates the last row, in fact we're adding the 2nd row to the third, but in the b's she subtracts the 2nd row from the third.

So the correct third row is [ 0 0 0 | -6b1 + b2 + b3 ] so that the condition for the compatibility is (-6b1 + b2 + b3)=0

I don't understand what do you mean

She is Croatian, not Serbian.

I lke the of man thanks you

with all this eastern european sensation, MIT must be really a good school

@JNRTomcat Nope, she was correct. We didn't actually add row 2 to row 3. If we did as you suggest, we would get -1 + -1 = -2. So our new row 3 would read [0 -2 0] and that's not what we want; we're trying to zero out the entire 3rd row. Instead, we have to SUBTRACT row 2 from row 3 which gets us -1 – (-1); the negatives cancel out and we get -1 + 1 = 0; that's exactly what we want. Therefore, we perform the same operation on our augmented column which gives us their difference, NOT their sum. (-4b1 + b3) – (-2b1 + b2) = -2b1 – b2 + b3.

so in real life you were asking whether Ax=b has a solution for all choice of b, the answer is no solution of Ax=b, because at the very end the conclusion is 0 =

~~2b1 -b2 + b3 <-~~not a solutionvery well explained, thanks a lot!

Is the special solution wrong here? If z=1 then we still have y=2b_1-b_2, or have I got it wrong?

Definitely not something to watch. I was picking it up at first but then I got all confused because she did.

linear algebra with rapunzel 🙂

is it mandatory to assume z=0

I guess I'm the DESIGNATED Superficial Commenter here.. so .. here goes… I had to watch this VIDEO twice.. because the First time through I was totally Taken by Martina's Sex Appeal… her features and her cuteness… (I'm such a guy!!) .. anyway.. the second time through I did follow the lecture and I did Learn!!.. so.. BRAVO.. I like how Martina says MOOtiply for Multiply.. lol…. I wonder if Chekov was the camera guy …

You should explain the particular solution more in depth.

Las matemáticas son el lenguaje universal:DDDDDDD

can you help in solving a problem of FEA ,

I like this video so much!

Garbage explanation. Why not take your time trying to explain EXACTLY why things happen instead of just trying to look smart? Example: WHY is this the case for the particular solution?

Great job, but you lost me on the special solution.

is there and error at minute 5:22 ? I think she multiplies -2 (-2b1+b2) instead of -2(2b1-b2)

whut?

she seems over-educated

Very clear , thanks!

beauty and brain thank you!

How about a parametric solution?

why in the special solution vector was it 2 and not -2 ?