Practice problem
What is the domain of f(x,y)=ln(x+y−1)f(x,y)=\ln(x+y-1)f(x,y)=ln(x+y−1)?
y>−x+1y> -x +1y>−x+1
y=−x+1y= -x +1y=−x+1
y<−x+1y<-x +1y<−x+1
Type a concept, like “slope” or “photosynthesis”.