Cross product for vectors of size 2. Fixes #1037
diff --git a/doc/TutorialMatrixArithmetic.dox b/doc/TutorialMatrixArithmetic.dox
index 5fc569a..53916c2 100644
--- a/doc/TutorialMatrixArithmetic.dox
+++ b/doc/TutorialMatrixArithmetic.dox
@@ -158,7 +158,7 @@
\verbinclude tut_arithmetic_dot_cross.out
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-Remember that cross product is only for vectors of size 3. Dot product is for vectors of any sizes.
+Cross product is defined in Eigen not only for vectors of size 3 but also for those of size 2, check \link MatrixBase::cross() the doc\endlink for details. Dot product is for vectors of any sizes.
When using complex numbers, Eigen's dot product is conjugate-linear in the first variable and linear in the
second variable.