Title
Φ:on U:on V:M(x,y)(x′,y′)⟶⟼⟼R3(X,Y,Z)=(x2+y2+12x,x2+y2+12y,x2+y2+1x2+y2−1)(X,Y,Z)=(x′2+y′2+12x′,x′2+y′2+12y′,−x′2+y′2+1x′2+y′2−1)Φ:on U:on V:M(x,y)(x′,y′)⟶⟼⟼R3(X,Y,Z)=(x2+y2+12x,x2+y2+12y,x2+y2+1x2+y2−1)(X,Y,Z)=(x′2+y′2+12x′,x′2+y′2+12y′,−x′2+y′2+1x′2+y′2−1)