# Fill integral exponent function [duplicate]

This question already has an answer here:

I want to fill integral limits by exponent function y=e^{x-1}; y=2-x, and Ox. Please everybody help ]1

## marked as duplicate by Andrew Swann, Bobyandbob, Troy, flav, SebastianoMay 18 '18 at 9:52

• What you want to achieve is not very clear. Could you explain with some details? – Bernard May 14 '18 at 8:03
• Please contextualize because we cannot read your mind. – gvgramazio May 14 '18 at 8:48
• \documentclass{standalone}\usepackage{pgfplots}\pgfplotsset{compat=1.9}\usepgfplotslibrary{fillbetween} \begin{document} \begin{tikzpicture} \begin{axis}[axis on top,set layers] \addplot[blue,name path=A,domain=0:2.3] {2-x)}; \addplot[red,name path=B,domain=0:2.3] {exp(x-1)}; \pgfonlayer{pre main} \fill[blue!20!white,intersection segments={of=B and A}] -- (axis cs:2.3,\pgfkeysvalueof{/pgfplots/ymin}) -- (axis cs:0,\pgfkeysvalueof{/pgfplots/ymin}) -- cycle; \endpgfonlayer \end{axis} \end{tikzpicture} \end{document} – Bobyandbob May 14 '18 at 9:02
• ... your question is a duplicate to Fill the area under minimum of two functions using tikz and pgfplots. Above i just changed this part \addplot[blue,name path=A,domain=0:2.3] {2-x}; \addplot[red,name path=B,domain=0:2.3] {exp(x-1)}; \pgfonlayer{pre main} \fill[blue!20!white,intersection segments={of=B and A}] to your needs. – Bobyandbob May 14 '18 at 9:05

First, you should post what you tried, and then, you post your question.

\documentclass[a4paper, 12pt]{standalone}
\usepackage{fouriernc}
\usepackage{amsmath}
\usepackage{pgfplots}
\usepgfplotslibrary{fillbetween}
\usetikzlibrary{patterns}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{tikzpicture}
\begin{axis}
[
axis lines = center,
axis line style = very thick,
xlabel=$x$, ylabel=$y$,
domain=-1:3,
ymin=-0.5,
ymax=2.5,
xmin=-1,
xmax=3,
xticklabels={},yticklabels={},
unit vector ratio*=1 1 1,
width=7cm,
grid=major,
grid style={gray!30}
]
\addplot [name path=A,blue, very thick,samples=100] {exp(x-1)};
\addplot [name path=B,thick] {2-x};
\addplot [name path=C] {0};
\node at (axis cs:-0.25, -0.25) {$O$} ;
\addplot [black, mark = *] coordinates {(1, 1)} ;
\addplot[pattern=north east lines] fill between[of=A and C,soft clip={domain=0:1}];
\addplot[pattern=north east lines] fill between[of=B and C,soft clip={domain=1:2}];
\node at (axis cs:-0.2, 1) {$1$} ;
\node at (axis cs:1, -0.25) {$1$} ; 