For what value(s) of ‘a’ quadratic equation 3𝑎𝑥 2 − 6𝑥 + 1 = 0 has no real roots?

For what value(s) of ‘a’ quadratic equation 3ax^2 − 6x + 1 = 0 has no

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Question 7 (Choice - 2) - CBSE Class 10 Sample Paper for 2021 Boards - Maths Standard - Part 2

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  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

Transcript

Question 7 (Choice - 2) For what value(s) of ‘a’ quadratic equation 3𝑎𝑥2 − 6𝑥 + 1 = 0 has no real roots? Given equation 3ax2 − 6x + 1 = 0 Since it has no real roots D < 0 b2 − 4ac < 0 Putting a = 3a, b = −6, c = 1 (−6)2 − 4(3a)(1) < 0 36 − 12a < 0 36 < 12a 12a > 36 a > 36/12 a > 3

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.