If y=a x+b x^ 2 +x has its extremum values at x =-1 and x=z_ d then
Mathematics · JEE Main · NTA Exams — Limit, Continuity and Differentiability
If \(y=a \log x+b x^{2}+x\) has its extremum values at \(\mathbf{x}=-1\) and \(x=z_{d}\) then
- \(\mathrm{a}=2, \mathrm{~b}=-1\)
- \(a=2, b=-\frac{1}{2}\)
- \(a=-2, b=\frac{1}{2}\)
- None of these
Answer
(B) a=2, b=- 1 2
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