diff --git a/symbolics.m b/symbolics.m
new file mode 100644
index 0000000..88e5fe3
--- /dev/null
+++ b/symbolics.m
@@ -0,0 +1,4 @@
+% declare type at the end for limiting field
+syms x y z real
+
+expand(x*(y+z))
\ No newline at end of file