Inverse of a Matrix - Matrices and Determinants, Business Mathematics & Statistics Video Lecture | Business Mathematics and Statistics - B Com

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hey guys what's up
I'm a came undone in front of you now we
are going to learn shut cut method for
matrix inverse below video there is a
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shortcut method or inmate rice is there
are many methods to discuss about a
inverse in a inverse you can find it by
row transformation column transformation
and the next one is a joint method but
still we are consuming more and more
time in these three method there are
also some miscellaneous method available
but they are too much time consuming so
today as per the recommendation of
students I am going to teach you a
shortcut method for a inverse okay let's
see one question question is a is equals
to a is equal to 0 1 2 1 2 3 3 1 1 okay
this is the question and you have to
find a inverse of up such ok sir
yeah method to board my useful Nega now
CBAC board may use cossack tanah Merah
stir board may - Eska you scare me acaba
thirunal east I use a man matrix inverse
animal nevela matrix inversion me is
cobot bought bought bought username
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okay so board my belly up to use now you
can cross legs and sir by using this
method or you can use it in matrix
inversion ok matrix inversion Carragher
up coupon I had topic to a channel pay
video they accept the have matrix
inversion curve okay let's discuss the
shortcut actually inverse Delta inverse
is
one upon determinant value of a into
adjoint of a ok that's it and how to
find the determinant value we can
calculate the determinant value here I
am doing rough work so you want to
particular not know prison Oh was not
clucks it if you are not comfortable
with determinant value you can see video
on our Channel what is the determinant
value and how to calculate it but now we
are discussing matrices so my answer is
1 upon minus 2 and directly writing it
what is a joint of e actually a joint fi
in curricula Kline the method a hum one
he nicknamed la we are going to discuss
the shortcut first of all shortcut key
layup qu 0 1 2 1 2 3 & 3 1 1 go as it is
like then I okay now you have a column
number 1 and column number 2 co-op core
repeat cur than ahead that is 0 1 3 1 2
1 ok that's clear for you now Row 1 and
Row 2 co-op quarry pit core then arrow 1
is 0 1 2 0 1 0 1 2 0 1 Row 2 here 1 2 3
1 2 1 2 3 1 2 that's it up with not
tabulation car then a 3 by 3 matrix Co
convert cardina have 5 by 5 matrix map
ok is key first row up could delete cur
then here horizontal row and first
column up could delete
Gardena yeah okay let us cut the short
cut starting cup which are element the
current in the cross multiplier of 2
into 1 2 1 into 3 3 2 minus 3 is minus 1
write down the element here okay
a we are going here column wise okay we
are going here column wise a is 2 quiz 1
ke sath into kuru criss cross multiply 2
into 1 2 1 into 1 1 2 minus 1 is 1 okay
again 3 into 1 3 2 into 2 4 3 minus 4 is
minus 1 you can see I am going column
wise and I am writing adjoint a row wise
you have to note that you have to know
that you are calculating column wise and
you're writing element row wise ok the
next 3 into 3 1 into 1 9 minus 1 is 8 I
am going column wise writing row wise 1
2 0 0 2 into 3 6 0 minus 6 is minus 6 I
am going colorized writing row wise next
1 into 2 is 2 0 into 3 0 2 minus 0 is 2
1 into 1 3 into 2 6 1 minus 6 is minus 5
the next one is the next one is 1 into 3
is 3 0 into 1 is 0 3 minus 0 is 3 you
can notice I am going color wise and
writing row wise 2 into 0 is 0 1 into 1
is 1 0 minus 1 is minus 1 that said this
is my final answer
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