L
lihknight


gpt x + 3 + 1/2 * log2cua(x+2) = (1 + 1/x)^2 + 2*(x+2)^(1/2) + log2cua { (2x+1)/x}
http://www.youtube.com/watch?v=gFpqwWhdunY&feature=player_embedded
http://www.youtube.com/watch?v=gFpqwWhdunY&feature=player_embedded