Relations Question 34
Question: Let $ f:R-{ \frac{5}{4} }\to R $ be a function defined as $ f( x )=\frac{5x}{4x+5}. $ The inverse of f is the map g: Range $ f\to R-{ \frac{5}{4} } $ given by $ {f^{-1}}(x)=\frac{ax}{a+by}, $ then the value of $ a+b $ is
Solution:
Answer: 2
BETA
