Mathematics · 2019
JEE Main · 12 January 2019, Shift 2 · Q62
The number of integral values of m for which the quadratic expression, (1+2 m ) x^2-2(1+3 m ) x+4(1+ m ), x ∈ R, is always positive, is:
The number of integral values of m for which the quadratic expression, $\displaystyle (1+2 \mathrm{~m}) x^2-2(1+3 \mathrm{~m}) x+4(1+\mathrm{m}), x \in \mathbf{R}$, is always positive, is :
Official answer
(2)
$\displaystyle 7$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.