Subject
Quantitative Aptitude
Topic
Solution
If x - (1/x) = √3 then x + (1/x) = ?
If x - (1/x) = √3 then x + (1/x) = ?
ক)
3√3খ)
√7গ)
2√3ঘ)
7Explanation
দেয়া আছে, x - (1/x)=√3 ⇒ {x - (1/x)} 2 =(√3) 2 ⇒ {x + (1/x)} 2 - 4x * (1/x) = 3 ⇒ {x + (1/x)} 2 - 4 = 3 ⇒ {x + (1/x)} 2 = 3 + 4 ⇒ {x + (1/x)} 2 = 7 ∴ {x + (1/x)} = √7Related questions
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