Let f (x) = alnx-1 / 2x ^ 2 + BX find the solution set of the inequality f (x) > F (1)

Let f (x) = alnx-1 / 2x ^ 2 + BX find the solution set of the inequality f (x) > F (1)

We can use the method of derivation: substituting the values of a and B, and deriving f (x) so that its value is zero, the solution is x = 2, where x = - 1.5 should be rounded off, because X in LNX can not be negative. Substituting x = 2 into the original function to solve the problem. It is better to add brackets to distinguish the numerator denominator in the second formula, this solution only considers (1 / 2) * (x * 2)