See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

  1 1 n 3 n 2 1 n 2 2 0 0 1 x I x tan x dx dx 4 n 3 n 3 1 x                 1 n 3 n 2 2 0 x n 3 I dx 4 1 x         similarly   1 n 1 n 2 0 x n 1 I dx 4 1 x             n 2 n 1 n 3 I n 1 I 2 n 2          n n n 1 a n 3, b n 1, c 2 n 2        