Help for more understanding with steps

4Vac2 - Evaluate the integral: dx 2 4 (A) Which trig substitution is correct for this integral? Ox = 4 sin(0) Ox = 4 sec(0) Ox = 2 sec(0) Ox = 2 sin(0) Ox = 2 tan(0) Ox = 4 tan(0) (B) Which integral do you obtain after substituting for a and simplifying? Note: to enter 0, type the word theta. de (C) What is the value of the above integral in terms of 0? + C D) What is the value of the original integral in terms of ac? + C