Linear Algebra: Simpler 4x4 determinant
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42 is always the answer, what did you expect :D
freedomisflight 2 weeks ago
I don't get why he puts minus signs when switching rows....I usually never put them before. Do you have to put them only when you find determinants???
Rand0mDeath 2 weeks ago
This is really good sir. Thanks a lot for your tutorials
newcollegebuddy 2 weeks ago
its 12:30 am, i got my test at 8 am, and i COULD NOT figure out where those negative's (from swapping rows) were coming from... id be doomed without this video, thank you!!!
taekwonwelchify 3 weeks ago
Perfect explanation, precise and to the point.. .Great Job!
Bulliondon 1 month ago
you sound like tom hanks btw :D
LadyAlchemy94 1 month ago
YOU SAVED MY LIFE
LadyAlchemy94 1 month ago
wow, dude your absolutely amazing. thankyou
adisamun 1 month ago
Ah that's what my teacher was talking about. The only words I picked up were triangle, zero and matrix but now I know what to do. Thanks!
sfkc1588 3 months ago
seriously, who negs khanacademy...
sytahr 3 months ago