If \(pq + 1 = q^2\) and \(t = \frac{1}{p} - \frac{1}{pq}\) express \(t\) in terms of \(q\)
Answer Details
Pq + 1 = q2......(i) t = 1p - 1pq.........(ii) p = q2−1q Sub for p in equation (ii) t = 1q2−1q - 1q2−1q×q t = qq2−1 - 1q2−1 t = q−1q2−1 = q−1(q+1)(q−1) = 1q+1