please indicate with option is correct in each problem with a clear explanation, thanks..

15 Evaluate the integral 0 1. 1 = -In 2 I = dx . 0 2. I = 2In (9) (x - 1)(5-x) 0 3. 1 = 21n 15 0 4. I = In (9) 0 5. 1 = 7In (15) 0 6. 1 = In (9)To which one of the following does the inte- 0 1. 1 = sin?(0) sec(0) de gral dx 1 0 2. 1 = sin ?(0 ) do reduce after an appropriate trig substitution? 0 3 . 1 = tan ? (0 ) de 0 4. 1 = tan (0) sec ? (0 ) de 5. 1 = sin(0) sec -(0 ) do 0 6. 1 = / sec ? (0 ) do