Given that a,b and c are real numbers such that b^2=4ac and a>0. The maximal possible set D\subseteq R on the the function f:D\toR given by f(x)=\log\{ax^3+(a+b)x^2+(b+c)x+c\} is defined, is

Correct Answer is : R−({−b2a}∪(−∞,−1])

R-(\{-b/{2a}\}\cup(-\infty,-1))

R-(\{-b/{2a}\}\cup\{x:x\geq1\})

R-(\{-b/{2a}\}\cup(-\infty,-1])

AP EAMCET Engineering 2018 Apr 22 Shift 1 Paper

Section: Mathematics

Question : 2 of 160

Marks: +1, -0

Given that a,b and c are real numbers such that b2=4ac and a>0. The maximal possible set D⊆R on the the function f:D→R given by
f(x)=log{ax3+(a+b)x2+(b+c)x+c} is defined, is

R−{−
b
2a
}
R−({−
b
2a
}∪(−∞,−1))
R−({−
b
2a
}∪{x:x≥1})
R−({−
b
2a
}∪(−∞,−1])

Validate

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