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If `y=log_(7-a)(2x^(2)+2x+a3)"is defined"AAx inR,` then possible integral value (s) of a is/areA. `-3`B. `-2`C. 4D. 5 |
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Answer» For `log_(7-a)(2x^(2)+2x+a+3)` `{:(2x^(2)+2x+a+3gt0, and, 7-agt0","7-a ne1),(thereforeDlt0,,),(implies4-4(2)(a+3)lt0,and,alt7","a ne8):}` `implies1-2(a+3)lt0` `implies2(a+3)gt1` `impliesa+3gt1/2` `impliesa gt-5/2` `therefore-5/2ltalt7" ""]"` |
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