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-rw-r--r--usr.bin/learn/lib/eqn/L4.2c19
1 files changed, 19 insertions, 0 deletions
diff --git a/usr.bin/learn/lib/eqn/L4.2c b/usr.bin/learn/lib/eqn/L4.2c
new file mode 100644
index 00000000000..84b786f0904
--- /dev/null
+++ b/usr.bin/learn/lib/eqn/L4.2c
@@ -0,0 +1,19 @@
+#print
+Does the neqn input
+ .EQ
+ ~a
+ over
+ b~
+ .EN
+produce the same output as the input
+ .EQ
+ a~ over ~b
+ .EN
+Answer yes or no.
+#copyin
+#user
+#uncopyin
+#match no
+#log
+#next
+4.1d 10