what is singular or nonsingular Matrix second is number of one one function from A to B having a and b elements third iswhat is Principal value of Cos inverse 1 by 2
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singular matix re those whose deyerminant value is0
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No. of one one fxn is b!\(b-a)!
ninja7:
you give wrong answer
It is right...the formula is bPa (or the way I have written previously) because for each element in A we select a distinct no. in B so bCa and then we can arrange it as a! so it becomes bCa* a! = bPa.
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