nCramer’s: If the determinant of a
system of n equations with n unknowns is nonzero, that system has precisely one
solution.
n
ndet(AB)=det(BA)=det(A)det(B)
n
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Materials for Ballast
1. Broken Stones 2.Gravels 3.Cinders / Ashes 4.Sand 5.Kankar 6.Moorum 7. Brick Ballast
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