This topic is introduced when a student is learning about a function. They will learn what is the definition of the function. In addition to that, there are certain conditions which a function has its inverse. This will be covered in JC H2 Mathematics class.
For each of the functions, obtain its inverse function.
- g(x) = 2/x
- g(x) = x + 1
- g(x) = 3/(x-1)
- g-1(x) = 2/x
- g-1(x) = x-1
- g-1(x) = (3/x) + 1
- In order to obtain the inverse function, first one need to set the function x as y then make y become the subject of the formula.
- Function f is said to be the inverse of function g if the inverse of function f is also equal to function g and vice versa.
- For verification purpose, one can check if ff-1(x) or f-1f(x) will return to x.
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