1.If the harmonic mean between aaa and bbb be HHH, then the value of 1H−a+1H−b\frac{1}{H-a} + \frac{1}{H-b}H−a1+H−b1 isa.a+ba + ba+bb.abababc.1a+1b\frac{1}{a} + \frac{1}{b}a1+b1d.1a−1b\frac{1}{a} - \frac{1}{b}a1−b1Login to continueOnly logged in users canattempt or see the solution.
