Initial data commit

Task/Variables/TI-89-BASIC/variables-2.basic

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+Define mynum = 1                  © Two ways to assign a number
+1 → mynum
+
+Define myfunc(x) = (sin(x))^2     © Two ways to assign a function
+(sin(x))^2 → myfunc(x)
+
+Define myfunc(x) = Func           © Multi-statement function
+  If x < 0 Then
+    Return –x
+  Else
+    Return x
+  EndIf
+EndFunc