1 files changed, 8 insertions, 0 deletions
diff --git a/104/CH2/EX2.23/2_23.sce b/104/CH2/EX2.23/2_23.sce
new file mode 100755
index 000000000..744e49876
--- /dev/null
+++ b/104/CH2/EX2.23/2_23.sce
@@ -0,0 +1,8 @@
+//z transform 
+//t=k*T
+syms k z;
+a=1;
+T=1;
+x =%e^-(a*k*T);
+X = symsum(x*(z^(-k)),k,0,%inf)
+disp(X,"ans=")
+\ No newline at end of file