Practice problem
If f(x)=x+af(x)=\sqrt{x+a}f(x)=x+a and g(x)=x+bg(x)=\sqrt{x+b}g(x)=x+b, which condition must be true if f(x)=g(x)f(x)=g(x)f(x)=g(x) for any value of xxx?
a2=b2a^2=b^2a2=b2
a=ba=ba=b
a=ba=\sqrt{b}a=b
a=−ba=-ba=−b
Type a concept, like “slope” or “photosynthesis”.
