x - 1/x = 3/2 হলে x3 - 1/x3 এর মান কত?
Solution
Correct Answer: Option D
দেওয়া আছে,
x - 1/x = 3/2
তাহলে,
x3 - 1/x3 = (x - 1/x)3 + 3.x.1/x(x - 1/x)
= (3/2)3 + 3(3/2)
= (27/8) + (9/2)
= (27 + 36)/8
= 63/8
x - 1/x = 3/2
তাহলে,
x3 - 1/x3 = (x - 1/x)3 + 3.x.1/x(x - 1/x)
= (3/2)3 + 3(3/2)
= (27/8) + (9/2)
= (27 + 36)/8
= 63/8
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