[}–¼] ƒ`ƒFƒbƒN–ä—l‚R [˜A—§•û’öŽ®] Z=Sin(ƒÎ*(X+Y))*Sin(ƒÎ*(Y-X)) Z=0 ƒÎ=3.14159 [•û’öŽ®‚ÌÀ•WŒn] ’¼ŒðÀ•WŒn [•û’öŽ®‚ÌÀ•W•Ï”] X,Y [F] Z=ƒ0‚Å“yFAZ„0‚Å”’B [•û’öŽ®‚Ì‹OÕ] •û’öŽ® Z=0‚Ì‹OÕ‚Í“yF‚Æ”’‚Ì‹«ŠEüB ƒOƒ‰ƒtƒBƒbƒNƒX‚Ì–ÚŽŸ‚Ö
