a2+1a2=51 হলে, a-1a এর মান কত?
a2+1a2=51 হলে, a-1a এর মান কত? Correct Answer ±7
a2 + (1/a)2 = 51 = > {a - (1/a)}2 + 2.a.(1/a) = 51 = > {a - (1/a)}2 = 51 - 2 = > {a - (1/a)}2 = 49 ∴ {a - (1/a)} = ±7a2+1a2=51 হলে, a-1a এর মান কত? Correct Answer ±7
a2 + (1/a)2 = 51 = > {a - (1/a)}2 + 2.a.(1/a) = 51 = > {a - (1/a)}2 = 51 - 2 = > {a - (1/a)}2 = 49 ∴ {a - (1/a)} = ±7