Matrices | Adjoint of a Matrix | Don't Memorise

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In this video, we will learn:
0:00 how to find adjoint of a matrix?
2:52 how to find transpose of a matrix?
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#Matrices #Adjoint #InfinityLearn #neet2024 #infinityLearnNEET #neetsyllabus #neet2025

[@InfinityLearn_NEET]

The adjoint of a matrix A is the transpose of the cofactor matrix of A . It is denoted by adj A . An adjoint matrix is also called an adjugate matrix.
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[@Manisha.729]

The cofactor of 3 had been done wrong it Should be 1

[@YuvrajSingh-fn3ds]

@@Manisha.729 it's correct
Check urself

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Yeah bro😁

[@farsana7499]

Exactly 😂

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Wow! Best video on adjoint matrices on youtube by far! Understood in 3 minutes what I couldn't get in a 1:20 Hr lecture!

[@riteeshbommaraju]

HAHAHAHAHA Same pinch

[@IndieDeveloperGuy]

Which idiot was teaching this in 1hour 20mins

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Isn't it ironic that a channel called Don't Memorise literally only shows you calculations to be memorized while giving you zero intuition of what you're actually doing.

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when dont memorise turns to be just memorise

[@UTKETCHUP]

It's always easier in 2×2 tho

[@aafrink5158]

@1:49 Orrrrr u guys could just interchange the left diagnol I.e. interchange places of 3 with 2 and then change signs of the right diagonal I.e write -5 and -1 instead of 5 and 1🤗 (but this shortcut method only works for 2×2 matrix)

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Kindly give proof of adjoint of singleton matrix❤❤

[@uzmaumar8633]

thank you so much

[@harshraajsinhchudasama6329]

Perfectly Gratifying
Merci beaucoup

[@vfxentity]

swap the entries on the main diagonal and reverse the sign on the entries on the other diagonal got it

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I loved this technique. Textbooks are so screwed up here in my country.

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Country?

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12th ke exam kab h?

[@mdmotiurrahman8172]

I can't understood how you write (-1) in cofactor of 2

[@malapumallika6577]

1+2=3 3 is odd number so it is -1
( If (-1)^n is odd it is -1 and if n is even it is 1

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I got easily what u said.....u said in a good manner

[@InfinityLearn_NEET]

We are glad that you understood the concept. For more videos, please visit our website - dontmemorise.com/ Keep Watching :)

[@Vikasyadav-ll6nw]

I understood...thnk u..
India 🙌

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Thanks alot mam, for giving a solution of adjoint matrix. I understood this topic from this lecture.

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[@InfinityLearn_NEET]

You're most welcome. We are really happy to hear that it was helped to you. We are glad that you understood the concept. For more videos, please visit our website - dontmemorise.com/

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[@InfinityLearn_NEET]

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We are glad we were able to help you through our video.
Keep watching! 🙂🙂

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This is the long method, it has an alternate I guess.

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|1 2|
|3 4|
Just put 4 and 1 in opposite directions and 3 and 2 remain same just add -ve signs for them and it's
|4 -2|
|-3 1|
That simple 😂

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[@InfinityLearn_NEET]

Thank you so much Arpit for your appreciation. We are glad that you understood the concept. For more videos, please visit our website - dontmemorise.com/

[@believer3860]

Wowww

[@indiraparajuli9715]

It's the underlying concept but in school we were taught that the diagonal 2 3 will have place change and the diagonal 5 1 will have sign change.
With that set we would get the exact same result within seconds. But Thanks for this video. It seemed hard for me through this method though.

[@help6115]

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[@shiyasebastian4969]

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[@TheRAVI147]

Very classy voice

[@abhaykale4608]

should have done it for a 3*3 matrix as well

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❤

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Thanks mam

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Good 👍