If x - (1/x) = √3 then x + (1/x) = ?
Solution
Correct Answer: Option B
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)} = √7
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)} = √7
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