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

यदि समीकरण \(x ^{2}-2 x +2=0\) के मूल \(\alpha\) तथा \(\beta\) है, तो \(n\) का न्यूनतम मान, जिसके लिए \(\left(\frac{\alpha}{\beta}\right)^{ n }=1\) है, है -

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

Answer & Solution

Correct Answer

(A) \(4\)

Step-by-step Solution

Detailed explanation

\((x-1)^{2}+1=0 \Rightarrow x=1+i, 1-i\) \(\therefore\left(\frac{\alpha}{\beta}\right)^{n}=1 \Rightarrow(\pm i)^{n}=1\) \(n\) (least natural number) \(=4\)
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app