For what value of c is the function one-to-one? start set open paren 1 comma 2 close paren comma open paren 2 comma 3 close paren comma open paren 3 comma 5 close paren comma open paren 4 comma 7 close paren comma open paren 5 comma 11 close paren comma open paren 6 comma c close paren end set