From 73aff20a439289f3b2472a5c80fcb053eb6758b8 Mon Sep 17 00:00:00 2001
From: aaaakshat <33050725+aaaakshat@users.noreply.github.com>
Date: Thu, 21 Oct 2021 12:28:09 -0400
Subject: [PATCH] Add pdf/cdf of ERV

---
 ch04.r | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/ch04.r b/ch04.r
index c0ee293..138d3bd 100644
--- a/ch04.r
+++ b/ch04.r
@@ -1,12 +1,23 @@
 # Chapter 4.3 (Cumulative Distribution Function)
 
-## CDF of a Gaussian mixture
+## 4.10 CDF of a Uniform Random Variable
 
 # R code to generate the PDF and CDF
-x = seq(-5, 10, (15)/1500)
+x = seq(-5, 10, (5+10)/1500)
 f = dunif(x, -3, 4)
 F = punif(x, -3, 4)
 plot(x, f, type="n")
 lines(x, f, lwd=5)
 plot(x, F, type="n")
 lines(x, F, lwd=5)
+
+## 4.11 CDF of an exponential random variable
+
+# R code to generate the PDF and CDF
+x = seq(-5, 10, (5+10)/1500)
+f = dexp(x, 1/2)
+F = pexp(x, 1/2)
+plot(x, f, type="n")
+lines(x, f, lwd=5)
+plot(x, F, type="n")
+lines(x, F, lwd=5)