Question-211902

Question Number 211902 by Gangadhar last updated on 23/Sep/24

Commented by BHOOPENDRA last updated on 24/Sep/24

3

Answered by BHOOPENDRA last updated on 24/Sep/24

[\begin{matrix} 1 2 & 3 \\ 3 4 & 4 \\ 7 10 & 12 \end{matrix}]

[\begin{matrix} 3 & 6 & 9 \\ 3 & 4 & 4 \\ 7 & 10 & 12 \end{matrix}] m u l t i p l y f i r s t r o w b y 3

[\begin{matrix} 1 & 2 & 3 \\ 0 & - 2 & - 5 \\ 7 & 10 & 12 \end{matrix}] r o w 1 - r o w 2

[\begin{matrix} 7 & 14 & 21 \\ 0 & - 2 & - 5 \\ 7 & 10 & 12 \end{matrix}] r o w 1 \times 7

[\begin{matrix} 1 & 2 & 3 \\ 0 & - 2 & - 5 \\ 0 & - 4 & - 9 \end{matrix}] s u b r a c t r o w 1 f r o m 3 r o w

[\begin{matrix} 1 & 2 & 3 \\ 0 & - 4 & - 10 \\ 0 & - 4 & - 9 \end{matrix}] 2 n d r o w \times 2

[\begin{matrix} 1 & 2 & 3 \\ 0 & - 2 & - 5 \\ 0 & 0 & 1 \end{matrix}]

s u b 2 n d r o w f r o m 3 r d r o w & r e s t o r e 2 n d r o w

[\begin{matrix} 1 & 2 & 3 \\ 0 & - 2 & - 5 \\ 0 & 0 & 1 \end{matrix}]

m a t r i x r a n k = 3

Commented by Spillover last updated on 24/Sep/24

c o r r e c t