Quick determinant trick 

I just love the way professor drops his marker at the end proving that he is the boss. It is a nice rule to calculate determinant. Professor, I guess it is called "Sarrus Rule". Please correct me.

A fascinating thing about this method, is than you can "use" all sides of the matrix. Meaning you can copy the last two columns to the left side of the matrix, and here's the punch line, you can even copy the respective rows to above or below the matrix, and make similar diagonals. It will yield the same result!

This is precisely the method taught to me when I was first introduced to determinants in my high school algebra class.

I'm so happy this professor still replying to others comments,nice trick i was looking for a short-cut to find the determinant of 3×3,thanks sir it helps me a lot

Dr payam! Any shortcut to find inverse of matrix?

You need more subs. As a Rutgers student taking lin alg this is a life saver ty. I hope this comment can make your day. I know video is old but the thing about math is that new students are born every day.

I know this vid is 2 years old but dude. Literally awesome. Saved so much time when I just needed a quick refresher on how to do the problem. I went to organic chemistry tutor; he literally did something way more complex than what we did in class (he still isn't bad though) GG im dropping a sub

You are a life saver🤧❤

THE PEN DROP WAS SO SATISFYING ......LIKE U NAILED IT

How I finish my math test with *style* 1:11

It's sarrus method isn't it?

I learned a new way to solve determinant

I love the ending 😂😂😂

Thanks a lot sir the trick is so helpful ❤😊

This is the smartest golden retriever ive ever seen

you just saved me a lot of time thank you man 😁

Good stuff- I love the two column method! Looking fresh in the new channel pic :)

Supper easy method! Thanks a lots

technically this method uses more multiplication operations than the regular way. (if I'm not figuring incorrectly, it uses 12 multiplications and 5 additions and the regular way uses 6 multiplications and 5 additions.. but the sign flips across the sub determinants probably count as multiplications as well so the two methods are hard to compare) but it very beautifully illustrates the wrap-around symmetry of matrices. you could append columns on the left or rows above and below and it would work as well very nice

Inverse of matrix next, pretty please.

thank you man!

A shame this doesn't work for R^4 and above

Make a video on polar conatruction or geometric bundles

Great method! 😍😍😍 I have just created a *bookmark* with your problem & solution and slipped that inside a thick calculus book.

My friends say i draw my matrix brackets weird. Nice to know someone qualified uses the same ones as I do.

Well, isn’t it the sarrus rule??

😂 Just loved your actions ❤

Pen drop is the new QED. Change my mind.

I needed this thanks so much I'm constantly looking for videos which make functions easier "sweet 16"

Sir you are just amazing, thanks for great tricks.

Thank You🔥🔥🔥🔥🔥🔥

does this trick work for the 4 x4 matrix too??

Holy shit THANK YOU

Regle de Sarus !

why doesn't this work on 4x4 matrix

Thanks!

my man

There'll be an extra helping of sacrificial grain at the altar of Hypatia, Leibniz and Gauss tonight. Why couldn't they have taught us this at school when I were a lad?

Thank you very much 😘

Its a trick which consumes more time than actual method❤

-5*-2 isn't 10 ?

Genius!

Nice

did i just learn this in my last year of college ? OMG my method was way harderrrrrrr

Dr payam sir........ You are as God to me Thank God This is a big ticket to pass the 12th exam 🙏🏻🙏🏻🙏🏻🙏🏻

Isn't this just the permutation definition of the determinant, from which the commonly used method is derived from?

Wow. Didn't know about that.

Good trick

TyrannoSarrus rex 🦖

I just created a playlist called shortmathculc ,next video is how to calculate the inverse of a Matrix.

Thanks bro i am tired to find it😮😮😮😮

U r legend

how to use it on 4*4? need a quick help

Can I use this method in exams. If the questions says "Find the determinant without expanstion (by using properties)."

Peyam's maid: "What the f%$# are all these marks on the floor all the time?"

die gute alte jägerzaun-regel

Awesome

Great 👍👍

How will I apply in 4×4 matrix

Yes we believe it -10

You're gonna damage the tip of marker pen doing that stunt in the end😀

I luvvv itt❤❤❤

That's fcking Sarrus rule, dammit

Wow

Sir Is this method a Sarrus method ? DrRahul Rohtak Haryana India

I thinkyou are teaching linear algebra this semester

nice sir

Rank = 58 or 19 ?

Is this generalisable to higher dimensions?

You believe -5 x -2 is -10 ?

lmao my teacher taught this on our regular class already

Cool

Sarruss

Who knows the trick already 👇👇👇

I already used this .. before

OMG UNBILIVABALE

Trick yes. But is it computationally more efficient. No

How is that any better than Sarrus? You are literally doing the same operations plus you have to write the extra lines

Next time, drop your phone at the end of the video

goat!

ok, but why?

Laplace >>>> Sarrus

This is any trick. This is a rule os Sarrus

Lol I've seen this method from a manga...

I always preferred the method of triangles over Sarrus' rule. 😉

Pen drop

Answer isn't coming