1 files changed, 18 insertions, 0 deletions
diff --git a/2459/CH28/EX28.4/Ex28_4.sce b/2459/CH28/EX28.4/Ex28_4.sce
new file mode 100644
index 000000000..e6352d36c
--- /dev/null
+++ b/2459/CH28/EX28.4/Ex28_4.sce
@@ -0,0 +1,18 @@
+//chapter28
+//example28.4
+//page598
+
+disp(" A      B      Y_dash = A + B    Y = Y_dash.A  ")
+disp(" 0      0           0               0     ")
+disp(" 1      0           1               1     ")
+disp(" 0      1           1               0     ")
+disp(" 1      1           1               1     ")
+
+printf("\nexplanation: \n")
+printf("A=0 and B=0 give A`=1 and B`=1 so Y_dash = A + B is 0 and Y = Y_dash.A is 0 \n")
+
+printf("A=1 and B=0 give A`=0 and B`=1 so Y_dash = A + B is 1 and Y = Y_dash.A is 1 \n")
+
+printf("A=0 and B=1 give A`=1 and B`=0 so Y_dash = A + B is 1 and Y = Y_dash.A is 0 \n")
+
+printf("A=1 and B=1 give A`=0 and B`=0 so Y_dash = A + B is 1 and Y = Y_dash.A is 1 \n")