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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- UGC NET
- Computer Science & Applications
It is a group (b) the set {1,-1, i, -i} wrt multiplication -1 i 1 e 1 e.cor -1 i -1 (b) it is associative (a) it is closed 1 is identity (1)1 = 1(-1)1= - 1 (i)1
It is a group (b) The set {1,-1, i, -i} wrt multiplication -1 i 1 E 1 e.cor -1 i -1 (B) It is associative (A) It is closed 1 is identity (1)1 = 1(-1)1= - 1 (i)1 = - i (-i)' = i (D) (C) It is a group. J4on modulo 6
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Nabeela Best Answer
i²= -1.....so -(i²)= 1
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Nabeela
i is iota here
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Nabeela
take any value from extreme right..like i...now look for 1 in that particular row...it is under -i....so -i is the inverse of i
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Nabeela
it is closed since all the values in the matrix are from set itself..every element have and identity element as there is 1 in every row. d part is the calculation of the inverse...if identity element exists then its inverse will also exist..where we find 1 in the row..just look at it's column element. that would be the inverse
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but how come we got -i*i=1
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Sana khan Khan
thnku so much Mam.... i got ur point😊