It can be seen from the question that A=√2, and (2, √2) and (6,0) are substituted into the formula, then 2W+P= pie /2+2K pie, 6W+P=K pie, and because W >；; 0,┃p┃<； Pai /2, so W= 1/8, P= 1/4. Y=√2sin(π/8 x+π/4)。 X= 16K or 4+ 16K(K= 1, 2,3 ...) I'm very tired. I hope I can help you. hoop