Hi
To find inverse of a function,
- We assume f(x) = y
- And then find x in terms of y
For example in the question
f(x) = 4x / (3x + 4)
y = 4x / (3x + 4)
....
...
x = 4y / (4 - 3y)
So, this x is the inverse,
Thus, we write,
g(y) = 4y / (4 - 3y)
The correct answer should be B.
There is a mistake in the last two lines.
We will correct and it update it.
Written on May 7, 2017, 1:09 p.m.