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If the function f(x)=(x^2)/2+lnx+a x is...

If the function `f(x)=(x^2)/2+lnx+a x` is always monotonically increasing in its domain then the least value of `a` is 2 (b) `-2` (c) `-1` (d) 1

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RESONANCE DPP-CONTINUITY AND DIFFERENTIABILITY-All Questions
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