Usama007 Usama007

01-08-2016
Mathematics

contestada

2x+ky=7 and 4x-9y=4 find value of k if matrix of coefficients is singular

Respuesta :

01-08-2016

Hello,

| 2 k|
|4 -9 |=6

==>2*(-9)-4*k=0
==>k=-9/2

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