If px 2 + qx + r = 0, p, q, r ∈ R has no real zero and the line y + 2 = 0 is tangent to f…
Mathematics · JEE Main · NTA Exams — Limit, Continuity and Differentiability
If px2 + qx + r = 0, p, q, r ∈ R has no real zero and the line
y + 2 = 0 is tangent to f (x) = px2 + qx + r then
y + 2 = 0 is tangent to f (x) = px2 + qx + r then
- p + q + r > 0
- p – q + r > 0
- r < 0
- None of these
Answer
(C) r < 0
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