a+(1/a) =2 হলে a2 + (1/a2 ) এর মান কত?
Solution
Correct Answer: Option A
দেওয়া আছে,
a+(1/a) =2
∴ a2 + (1/a2 )= {a+(1/a)}2 - 2.a.(1/a)
= 22 - 2
= 4 - 2
= 2
a+(1/a) =2
∴ a2 + (1/a2 )= {a+(1/a)}2 - 2.a.(1/a)
= 22 - 2
= 4 - 2
= 2
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