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Blazing goIITian

Joined:	9 Dec 2006
Post:	462

9 Dec 2006 21:27:34 IST

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shubhra_rai [admin]: calculate determinant

None

determinant - 1 a 1

a a 1

a 1 1

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manishlistening

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Joined: 9 Dec 2006

Posts: 2

10 Dec 2006 14:31:07 IST

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it is simple to see that the det. vanishes by putting a=1 and also its derivative. so, det.=k * square of (a-1)..........(1)

by comparing the coeff. of square of 'a' from the det. and RHS of equ 1 we get k = -1

rashmi_jain

Forum Expert

Joined: 6 Dec 2006

Posts: 97

10 Dec 2006 19:47:21 IST

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just calculate the determinant in the usual simple fashion.

answer is -1*(a-1)²

determinant of a b c

d e f

g h i

a(ei-fh) - b(di-gf) + c(dh-ge)

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