Mathematics for IGCSE & O level - Functions (Section 1 - No. 11)
Which of the following could be the domain for f^-1(x), given f(x) has a range of all real numbers?
All real numbers
Positive real numbers
Negative real numbers
Numbers greater than 1
คำอธิบาย
The range of f(x) becomes the domain of f^-1(x).