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49. If `[x^2-2x + a] = 0 `has no solution thenA. `-oo lt a lt 1`B. `2 le a lt oo`C. `1 lt a lt 2`D. ` a in R` |
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Answer» Correct Answer - B Case (i) `x^(2)-2x+a lt 0 AA x in R` which not possible `x^(2)-2x +a ge 1` `x^(2)-2x +a-1 ge 0` Disc `le 0` `4-4(a-1) le 0` `2-a le 0` `a ge 2` ` a in [2, oo)` |
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