1.

Suppose \[\Delta =\left| \begin{matrix}    {{a}_{1}} & {{b}_{1}} & {{c}_{1}}  \\    {{a}_{2}} & {{b}_{2}} & {{c}_{2}}  \\    {{a}_{3}} & {{b}_{3}} & {{c}_{3}}  \\ \end{matrix} \right|\] and\[\Delta '=\left| \begin{matrix}    {{a}_{1}}+p{{b}_{1}} & {{b}_{1}}+q{{c}_{1}} & {{c}_{1}}+r{{a}_{1}}  \\    {{a}_{2}}+p{{b}_{2}} & {{b}_{2}}+q{{c}_{2}} & {{c}_{2}}+r{{a}_{2}}  \\    {{a}_{3}}+p{{b}_{3}} & {{b}_{3}}+q{{c}_{3}} & {{c}_{3}}+r{{a}_{3}}  \\ \end{matrix} \right|\]. Then

A. \[\Delta '=\Delta \]
B. \[\Delta '=\Delta \,\,(1-pqr)\]
C. \[\Delta '=\Delta \,\,(1+p+q+r)\]
D. \[\Delta '=\Delta \,\,(1+pqr)\]
Answer» E.


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