Procedure to Find a Basis for a Set of Vectors 

+Nick Leon less than 10 minutes...just 7 and half minutes

He said "I learned in 10 minutes". No where in his sentence did he specify that it took him ten minutes to watch the video, or the length of the video for that matter. He simply stated "I learned", therefor, he may have watched the 7 and a half minute video and paused it to think etc.

lầy vãi =))

I know it's pretty off topic but does anybody know a good website to watch new series online?

@Alec Kendall i dunno I use Flixportal. just search on google after it:P -holden

Because you actually pay attention to these videos and want to learn compared to class lol

@@mandrew4261 Lol that might be true, other people often distract you

If the RU-vid tutorial sucks, no one will watch their videos. More views = more RU-vid ad revenue. Professors get paid the same regardless of the quality of teaching so they have no incentive to do good. Also like The Duke said, professors do research too which is really what gets them the money.

Also youtube tutorials may appear easier because you've already been introduced to the complicated stuff in class, so watching slightly easier stuff a couple more times after that seems a lot easier. Nonetheless, this guy did a great job explaining the topic

For real

if rank is 2 then you don't need more than two vectors to form the basis.

Span = infinity if dependant.

BreezyMuffins Bahahahaha! Touché.

This video is completely wrong. Don't follow it. You have to parametrize each column that does not have a leading 1. Then you separate the parametrized variables to get the basis.

rref helps you find which columns they are, but the values of those columns in rref do not serve as a basis for the original matrix.

Yes since each of their columns have a "leading 1".

+Divyang Vashi go their website and tell them this. everyone knows this except for them.

I agree with you 100%

Well, this guy gets too much credit to solve extremely easy problems. You won't always get an easy pre-made example problem where two rows completely cancel out. He only does like the easiest examples of things possible. As a college student who has come here once or twice throughout the years, it has never really helped even if it seems nice because he does the easiest possible example. He also didn't answer the question, he just half-stated the final part of the problem which is never going to be just displaying the 2 pre-given vectors.

he might not to the hardest examples but he explains the concepts better than anyone ive found. certainly better than professors

Hunter Beauclair Of course, because the problem is easy. Some 'professors' are bad but it's true that almost every explained concept here won't help you if you're actually trying to learn it. You're only giving yourself the illusion that you can do it by following a pre-determined easy problem that an 8th grader can solve if given the methodology to do so. These videos tend to give no understanding whatsoever behind more advanced concepts. Generally any academic work would involve almost every other question switching to a new concept, so you might now know how to do #1 but not #2 through #30, and not the next section because you only memorized basic functions. Then psychologically because you procrastinate, as some people do, it becomes the professor's fault when you take the test and don't know how to even begin. Granted, I have had professors that were pretty annoying, but generally people who just aren't smart blame others for their insecurities.