x+(1/x) = √3 হলে, x3+(1/x)3 এর মান কত?
Solution
Correct Answer: Option D
দেয়া আছে,
x + 1/x³ = √3
∴ x³ + 1/x³ = (x + 1/x)³ - 3x.1/x(x + 1/x)
= (√3)³ - 3(√3)
= 3√3 - 3√3
= 0
x + 1/x³ = √3
∴ x³ + 1/x³ = (x + 1/x)³ - 3x.1/x(x + 1/x)
= (√3)³ - 3(√3)
= 3√3 - 3√3
= 0
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