Identity Matrix | Unit Matrix | Don't Memorise

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The m×m diagonal matrix with all diagonal entries equal to 1 is called the identity matrix and is denoted by I (or, Im).
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By RAKKSITHA

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It's my pleasure. We are glad that you understood the concept. We are happy that we could help you learn. You motivate us to do better. Keep watching our videos : )

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[@dilkanthyuvi7056]

When we got another number for 1,and same order, is that identity matrix?

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Most welcome, Uzama!
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[@rubaldiwan8824]

If identiy is unique , then it means that this matrix is identity of all matrix. Then how some matrix also have differnt identities??

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1×0=0. 😮Maths error multiplucative identity disorder

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Superb explanation

[@thecyclones9436]

What about 1by1 identity matrix?

[@iitjee2437]

great

[@rahul-kh9gx]

Sir unit matrix aur Identity matrix Is same ?

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👌👌👌

[@GurleenKaur-zv2oy]

i =[1 ]

[@ssmathacademy1277]

( 0 1 )
( 1 0 )
Mam is this identify matrix ?
Also ( 1 )
Is identify matrix ?

[@thomasbroekman8670]

(1) is,
(0 1)
(1 0) is not.

[@vetchasrinivasrao9413]

Mam this is applied only from 2.2 matrix

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yea what if a was 3.2?

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Thank you so much, Shreya.
Happy Learning :)

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Osm

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What if there is In inverse

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What does it mean by.I is a unit matrix of order 3

[@debangshupatnaik5150]

It means it is a square matrix with 3 rows and 3 columns

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