2x-(2/x)=3 হলে , 8x3 - (1/x3) এর মান কত?
Correct Answer: Option C
দেওয়া আছে,
2x-(2/x)=3
⇒2{x-(1/x)}=3
⇒x-(1/x) = 3/2
∴প্রদত্ত রাশি = 8(x3 - (1/x3)
=8[{x-(1/x)3 + 3.x.1/x{x-(1/x)}]
=8{(3/2)3+3.3/2}
=8{(27/8)+(9/2)}
=8×(63/8)=63
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