设f(u+v,u-v)=v^2-u^2,则f(x,y)=

如题,设f(u+v,u-v)=v^2-u^2,则f(x,y)=求详解
2025-06-22 22:26:07
推荐回答(2个)
回答1:

f(u+v,u-v)=v^2-u^2=(v-u)(v+u)= -(u-v)(u+v)= -xy

回答2:

设f(u+v,u-v)=v^2-u^2,则f(x,y)=xy