Contact us
Choose a category below so we can get back to you as quickly as possible.
全微分dz=∂;z/∂;x *dx + ∂;z/∂;y *dy在這裡z=(x²;+y²;)/(x²;-y²;)那麼∂;z/∂;x=[∂;(x²;+y²;)/∂;x *(x²;-y²;)-(x²;+y²;)*∂;(…
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.