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archita
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Homework Statement
The determinant
a+1 a a a
b b+1 b b
c c c+1 c
d d d d+1
equals =?
option : a) 1+ a + b+ c+ d
b)a + b+ c+ d
c)a.b.c.d
d)1 + a.b.c.d
Homework Equations
The Attempt at a Solution
[1] tried using finding the co factors...but the process becomes very length
[2] tried by row-column operations...as below , but nothing workd...
1 0 0 0 a a a a
0 1 0 0 + b b b b
0 0 1 0 c c c c
0 0 0 1 d d d d