Correct Answer: Option A
a-(1/a) = 3 হলে, a3-(1/a3)= কত?
a-(1/a) = 3
=> (a-1/a)3= 33
=> a3-1/a3 -3.a.1/a(a-1/a)=27
=> a3-1/a3- 3(3) = 27; [a-1/a = 3]
=> a3-1/a3 = 27 + 9 = 36
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