int 1/ (sq rt (4sec^2 x +4)) dx
trigonometric substitution
expression: sq rt (x^2-a^2)
substitution: x=a sec x
identity: sec^2 x -1=tan^2 x
im only in 7th grade but i got this for a answer
ln |(sq rt ((x-3)^2 +4)/2 + (x-3)/2| + C
hope it helps