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

यदि समीकरण \(x^2-x-1=0\) के मूल \(\alpha, \beta\) है तथा \(\mathrm{S}_{\mathrm{n}}=2023 \alpha^{\mathrm{n}}+2024 \beta^n\) है, तो :

  1. A  \(2 \mathrm{~S}_{12}=\mathrm{S}_{11}+\mathrm{S}_{10}\)
  2. B  \(\mathrm{S}_{12}=\mathrm{S}_{11}+\mathrm{S}_{10}\)
  3. C  \(2 \mathrm{~S}_{11}=\mathrm{S}_{12}+\mathrm{S}_{10}\)
  4. D  \(\mathrm{S}_{11}=\mathrm{S}_{10}+\mathrm{S}_{12}\)
Verified Solution

Answer & Solution

Correct Answer

(B)  \(\mathrm{S}_{12}=\mathrm{S}_{11}+\mathrm{S}_{10}\)

Step-by-step Solution

Detailed explanation

\({x}^2-\mathrm{x}-1=0 \) \(\mathrm{~S}_{\mathrm{n}}=2023 \alpha^{\mathrm{n}}+2024 \beta^{\mathrm{n}} \) \( \mathrm{S}_{\mathrm{n}-1}+\mathrm{S}_{\mathrm{n}-2}=2023 \alpha^{\mathrm{n}=1}+2024 \beta^{\mathrm{n}-1}+2023 \alpha^{\mathrm{n}-2}+2024 \beta^{\mathrm{n}-2} \)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app