MCQOPTIONS
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| 1. |
Suppose the system of equations \[{{a}_{1}}x+{{b}_{1}}y+{{c}_{1}}z={{d}_{1}}\] \[{{a}_{2}}x+{{b}_{2}}y+{{c}_{2}}z={{d}_{2}}\] \[{{a}_{3}}x+{{b}_{3}}y+{{c}_{3}}z={{d}_{3}}\] has a unique solution \[({{x}_{0}},{{y}_{0}},{{z}_{0}})\]. If \[{{x}_{0}}=0,\] then which one of the following is correct? |
| A. | \[\left| \begin{matrix} {{a}_{1}} & {{b}_{1}} & {{c}_{1}} \\ {{a}_{2}} & {{b}_{2}} & {{c}_{2}} \\ {{a}_{3}} & {{b}_{3}} & {{c}_{3}} \\ \end{matrix} \right|=0\] |
| B. | \[\left| \begin{matrix} {{d}_{1}} & {{b}_{1}} & {{c}_{1}} \\ {{d}_{2}} & {{b}_{2}} & {{c}_{2}} \\ {{d}_{3}} & {{b}_{3}} & {{c}_{3}} \\ \end{matrix} \right|=0\] |
| C. | \[\left| \begin{matrix} {{d}_{1}} & {{a}_{1}} & {{c}_{1}} \\ {{d}_{2}} & {{a}_{2}} & {{c}_{2}} \\ {{d}_{3}} & {{a}_{3}} & {{c}_{3}} \\ \end{matrix} \right|=0\] |
| D. | \[\left| \begin{matrix} {{d}_{1}} & {{a}_{1}} & {{b}_{1}} \\ {{d}_{2}} & {{a}_{2}} & {{b}_{2}} \\ {{d}_{3}} & {{a}_{3}} & {{b}_{3}} \\ \end{matrix} \right|=0\] |
| Answer» C. \[\left| \begin{matrix} {{d}_{1}} & {{a}_{1}} & {{c}_{1}} \\ {{d}_{2}} & {{a}_{2}} & {{c}_{2}} \\ {{d}_{3}} & {{a}_{3}} & {{c}_{3}} \\ \end{matrix} \right|=0\] | |