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Diffstat (limited to 'usr.bin/learn/lib/eqn/L3.1a')
| -rw-r--r-- | usr.bin/learn/lib/eqn/L3.1a | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/usr.bin/learn/lib/eqn/L3.1a b/usr.bin/learn/lib/eqn/L3.1a new file mode 100644 index 00000000000..a33f08973a2 --- /dev/null +++ b/usr.bin/learn/lib/eqn/L3.1a @@ -0,0 +1,53 @@ +#once #create message +.ND +.PP +Now that we have some of the preliminaries out of the way, +we can get on to doing real mathematics. +I have been slipping small things into the example files +as we go along so that you will at least have seen +some common neqn constructions. + +One of the most frequent is the word "sub", which +indicates a subscript, like this: + + .EQ + x sub i + y sub j + .EN + +which produces +.EQ +x sub i + y sub j +.EN +The main thing to notice is that the blanks are delimiters - +the subscript of "x" is "i"; the blank after the "i" marks +the end of the subscript. + +Modify the file "Example" so the equation in it looks like +this: +.EQ +x sub alpha ~=~ y sub pi ~+~ z sub pi +.EN +Then type "ready". +.pl 1 +#once #create Ref +.LP +.EQ +x sub alpha ~=~ y sub pi ~+~ z sub pi +.EN +.pl 1 +#once #create Example +.LP +.EQ +xxx +.EN +.pl 1 +# +#once neqn Ref | nroff >X1 & +#once neqn message | nroff -T$term %s/tinyms - +#user +neqn Example | nroff >X2 +#cmp X1 X2 +#log +#next +3.1b 10 +3.2a 5 |