ExamBro
ExamBro
JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

' \(a\) ' का वह न्यूनतम धनात्मक मान, जिसके लिए समीकरण \(2 x ^{2}+( a -10) x +\frac{33}{2}=2 a\) के वास्तविक मूल .......... हैं |

  1. A \(4\)
  2. B \(5\)
  3. C \(8\)
  4. D \(9\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(8\)

Step-by-step Solution

Detailed explanation

\(D \geq 0 \Rightarrow(a-10)^{2}-4 \times 2 \times\left(\frac{33}{2}-2 a\right) \geq 0\) \(\Rightarrow a^{2}-4 a-32 \geq 0\) \(\Rightarrow a \in(-\infty, 4] \cup[8, \infty)\)
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app