A) 5
B) 4
C) 3
D) 2
Correct Answer: A
Solution :
Coefficient of \[{{x}^{2}}>0\] (always) \[\Rightarrow \,f(1)<0\] \[\Rightarrow ({{a}^{2}}+a+2)\,-a-4-7<0\] \[\Rightarrow \,{{a}^{2}}-9<0\Rightarrow \,3<a<3\] \[\Rightarrow \] Number of integral values of a is 5 i.e., \[\{-2,\,-1,\,\,0,\,1,\,2\}\].You need to login to perform this action.
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