Let $A=PQ$. The elementary operations on A, that produces the same effect as it does on applying on P and keeping Q unchanged is :
(A) $R_i↔R_j$
(B) $R_i→R_i+KR_j$
(C) $C_i →K\, C_i$
(D) $C_i → C_i + K C_j $
Choose the correct answer from the options given below :
Answer & explanation
Correct answer: option 1
The correct answer is option (1) → (A) and (B) Only
Only row operations
make changes on P while keeping Q unchanged
So A, B are only correct options