From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 22/CH4/EX4.28/ch4ex28.sce | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100755 22/CH4/EX4.28/ch4ex28.sce

(limited to '22/CH4/EX4.28')

diff --git a/22/CH4/EX4.28/ch4ex28.sce b/22/CH4/EX4.28/ch4ex28.sce
new file mode 100755
index 000000000..b4d76fd0a
--- /dev/null
+++ b/22/CH4/EX4.28/ch4ex28.sce
@@ -0,0 +1,30 @@
+//signals and systems
+//bilateral Inverse Lapalce Transform 
+//X(S) = 1/((s-1)(s+2))
+s =%s ;
+syms t ;
+[A]=pfss(1/((s-1)*(s+2))) //partial fraction of F(s)
+F1 = ilaplace(A(1),s,t)
+F2 = ilaplace(A(2),s,t)
+F=F1+F2;
+disp(F,"f(t)=")
+
+
+//X(S) = 1/((s-1)(s+2))  Re(s)> -1,Re(s)< -2
+s =%s ;
+syms t ;
+[A]=pfss(1/((s-1)*(s+2))) //partial fraction of F(s)
+F1 = ilaplace(A(1),s,t)
+F2 = ilaplace(A(2),s,t)
+F = -F1-F2;
+disp(F,"f(t)=")
+
+
+//X(S) = 1/((s-1)(s+2))  -2< Re(s)< 1
+s =%s ;
+syms t ;
+[A]=pfss(1/((s-1)*(s+2))) //partial fraction of F(s)
+F1 = ilaplace(A(1),s,t)
+F2 = ilaplace(A(2),s,t)
+F = -F1+F2;
+disp(F,"f(t)=")
\ No newline at end of file
-- 
cgit