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If the lvalue of the determinants `|(a,1,1),(1,b,1),(1,1,c)|` is positive then:A. `abcgt1`B. `abcgt-8`C. `abcgt-8`D. `abcgt-2` |
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Answer» Correct Answer - 2 `Deltagt0` abc+ 2`gt`3`(abc)^(1//3)` Let `(abc)^(1//3)`=x `x^(3)+2gt3x` `(x-1)^(2)(x+2)gt0` `therefore x+2gt0` `xgt-2` `(abc)^(1//3)gt-2` `abcgt-8` |
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