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I was in my linear algebra class, and I was taking notes about how to prove Holder's Inequality. There is this one part (noted in red), I don't know how I went from 1 to 2.
http://i47.photobucket.com/albums/f1...whatdidido.jpg
How did I (or my professor) go from 1 to 2?
Remember Factoring polynomials? Same thing.
3x^2+7x+2=0
(3x^2+6x)+(x+2)=0
Then take out the GCF.
3x(x+2)+(x+2)=0
Reduce.
3x(x+2)=0
3x=0 x+2=0
x=0 x=-2
{-2, 0}
LOL no. First off, you factored your own example incorrectly.Quote:
Originally Posted by FFIX Choco Boy
3x2 + 7x + 2 = 0 becomes
(3x+1)(x+2) = 0
x = -1/3 and -2
So that was just plain wrong. Also, I believe you have a severe misconception about what Linear Algebra is. It's Calculus level math, and SRL is working with matrices anyways (at least, that what it appears to be like). I have no idea how he got that 2 coefficient, but try working out the matrices that are given. Maybe a negative somewhere didn't cancel out? When SRL said "slightly," he may have sort of meant "very." It's a joke.
I think he used Young's inequality to do that step.
It seems to follow that pattern, although I don't have the time to check it myself, sorry.
Good luck with the subject. I only scraped by with a 70% on Lineair Algebra myself. ^_^'
My mistake, wasn't paying much attention. But, yes, it seems to be the same basic process. I may be misreading some of his notes, because I don't pay a whole lot of attention anyways, but it seems at least very similar.Quote:
Originally Posted by Tavrobel
Hmm, just looked at it again, yup I looked at it wrong. Disregard and forget.
why does american 'math' look so different to english maths?
Looks the same as my dutch lineair Algebra, so I think it's just you. :p
Yeah, it's Young's Inequality. My professor mentioned this in the next class, and then I found where I put this in my notes, it just wasn't given a name. Thanks everyone.