If Q is the set of rational numbers and a function `f:Q to Q ` is defined as `f(x)=5x-4, x in Q`, then show that f is one-one and onto. Also define `f

Question

If Q is the set of rational numbers and a function `f:Q to Q ` is defined as `f(x)=5x-4, x in Q`, then show that f is one-one and onto. Also define `f

If Q is the set of rational numbers and a function `f:Q to Q ` is defined as `f(x)=5x-4, x in Q`, then show that f is one-one and onto. Also define `f^(-1)`.

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - `f^(-1):Q to Q , f^(-1)(y)=(y+4)/(5)`

5 views Answered 2023-02-05 15:29