Question

-1 0 0 1 9. Find 12 0 a) by using the Laplace expansion method. b) by using row reduction to triangular form c) by using pivotal condensation starting with the 1st pivot a1 and zeroing out the rest of the 4th column d) Repeat c) except zero out the rest of the 1st row

Answer 1

SoLUT TON Oo 1 2 fsh celumn )2 1o

0 -1叶0 o 1 -1 -1 -1 [0-1-0]

-2 At RsR2R3 0 -3 Hue elemeuts beloe the aut the

Celuwm こ+61) 一010-31 0 3 3 1 -3 I 0