Determinant



  • 0_1557842876834_CD143EC0-8AF5-4A8C-9969-5A3DFDB4C2D5.jpeg
    6.C 7.D 8.A



  • @tejastwix

    6th solved using cramers rule... as x=delta(x)/delta
    So for unique soln delta shud be non zero...

    0_1557845578330_20190514_202143.jpg
    0_1557845595108_20190514_202241.jpg

    7th: i hav solved manually for infinite solns...
    after finding lambda=1
    I hav solved
    (iii)-(ii) and (iii)+(ii)-(i)
    (i),(ii),(iii) are respective eqns.
    0_1557845693077_20190514_202436.jpg

    8th: delta shud be zero and at least one of
    delta(x),delta(y),delta(z) shud be non zero

    0_1557845824317_20190514_202646.jpg

    I hav solved very briefly so im attaching theory as well:

    a1x+b1y+c1z=d1a_1x+b_1y+c_1z=d_1
    a2x+b2y+c2z=d2a_2x+b_2y+c_2z=d_2
    a3x+b3y+c3z=d3a_3x+b_3y+c_3z=d_3

    0_1557846414329_20190514_203627.jpg

    0_1557846515970_20190514_203820.jpg


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