[}–¼] Œš•¨

 [˜A—§•û’öŽ®] Z=Sin(4*X)*SIN(4*Y)
              Z=0

 [•û’öŽ®‚ÌÀ•WŒn] ŠÖ”À•WŒn

 [•û’öŽ®‚ÌÀ•W•Ï”] X,Y

 [•`‰æ‚ÌÀ•WŒn] ’¼ŒðÀ•WŒn

 [•`‰æ‚ÌÀ•W•Ï”] P,Q

 [•û’öŽ®‚ÌÀ•W•Ï”‚Æ•`‰æ‚ÌÀ•W•Ï”‚ÌŠÖŒW]

          P=X^2/(1+Sqr(X^2+Y^2))

          Q=2*Y/(1+Sqr(X^2+Y^2))

 [F] Z=ƒ0‚ňÃÔAZ„0‚ňÃÂB

 [•û’öŽ®‚Ì‹OÕ] •û’öŽ® Z=0‚Ì‹OՂ͈ÃԂƈÂ̋«ŠEüB

ƒOƒ‰ƒtƒBƒbƒNƒX‚Ì–ÚŽŸ‚Ö