A problem about inserting PDF file

Question

I am using the following simple document

\documentclass[12pt,a4paper]{report}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{pdfpages}
\begin{document}
Hello world!Hello world!Hello world!Hello world!Hello world!
\includepdf[pages=1,scale=.4]{horn1.pdf}
Hello world!Hello world!Hello world!Hello world!Hello world!
\end{document}

In the output file, 3 pages can be seen:

First page:

  Hello world!Hello world!Hello world!Hello world!Hello world!

Second page:

  PDF file

Third page:

   Hello world!Hello world!Hello world!Hello world!Hello world!

Using the command "scale=.4", I've reduced the PDF file size. Why can not I see the output file in a page?

Answer 1

You don't need the package pdfpages. \includepdf will always include the pdf as a separate page. Use \includegraphics with the page option instead, from the graphicx package.

\documentclass{report}
\usepackage{graphicx}
\begin{document}
Hello world!Hello world!Hello world!Hello world!Hello world!

\includegraphics[page=1,scale=.4]{horn1.pdf}

Hello world!Hello world!Hello world!Hello world!Hello world!
\end{document}