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+# m_multiply
+
+Multiply two 4x4 transformation matrice.
+
+## Parameters
+
+- `ma`, `mb` : Two 4x4 transformation matrice.
+
+## Examples
+
+	include <m_multiply.scad>;
+	include <m_scaling.scad>;
+	include <m_rotation.scad>;
+
+	ma = m_scaling([0.5, 1, 2]);
+	mb = m_rotation([0, 0, 90]);
+
+	cube(10);
+	multmatrix(m_multiply(ma, mb))
+		translate([15, 0, 0])  cube(10);
+
+![m_multiply](images/lib-m_multiply-1.JPG)
+