Vikas TU9 Years agoWrite the log term in two terms as:=> log a^(2n-1) base 10 – logb^(m-1) base 10.now summation will apply on first term 2nd would be unchanged.thus,=> -log a + loga + 3loga + 5loga + 7loga + -----=> loga (3 + 5 + 7 + 9 + 11 + -------+)Now sum them with A.P.