If Martina is the author, then the book is fiction. But

Step 1 of 2

The given statement can be divided into simple statements as follows:

 : Martina is the author

 : The book is fiction

So the given arguments can be written as follows:

    If Martina is the author, then the book is fiction :- if , then . Symbolically we can write as:.

    But the book is nonfiction : “The book is not fiction” is represented as  .

    Therefore Martina is not the author: “Martina is not the author” is represented by :.