2 files changed, 26 insertions, 0 deletions
diff --git a/29/CH12/EX12.50/exa12_50.jpg b/29/CH12/EX12.50/exa12_50.jpg
new file mode 100755
index 000000000..ed60a3e8f
--- /dev/null
+++ b/29/CH12/EX12.50/exa12_50.jpg
diff --git a/29/CH12/EX12.50/exa12_50.sce b/29/CH12/EX12.50/exa12_50.sce
new file mode 100755
index 000000000..2703a28eb
--- /dev/null
+++ b/29/CH12/EX12.50/exa12_50.sce
@@ -0,0 +1,26 @@
+//caption:root_locus_and_close_loop_transfer_function
+//example 12.50
+//page 578
+s=%s
+K=8
+G=K/(s*(s+4))
+H=1;
+GH=G*H
+G=syslin('c',G)
+evans(G,8)
+xgrid(2)
+CH=s*(s+4)+K
+disp('=0',CH,"characterstics_eq,CH=")
+r=roots(CH)
+disp(r,"the point at which K=8")
+cl=G/(1+GH)
+disp(cl,"C(s)/R(s)=")
+
+
+
+disp("part b")
+g=K/(s+4)
+h=1/s
+gh=g*h
+CL=g/(1+gh)
+disp(CL,"C(s)/R(s)=")