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-rw-r--r--lib/matrix.rb6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb
index 1a7519f408..026492b6b8 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -1811,9 +1811,9 @@ class Vector
#
def cross_product(v)
Vector.Raise ErrDimensionMismatch unless size == v.size && v.size == 3
- Vector[ v[1]*@elements[2] - v[2]*@elements[1],
- v[2]*@elements[0] - v[0]*@elements[2],
- v[0]*@elements[1] - v[1]*@elements[0] ]
+ Vector[ v[2]*@elements[1] - v[1]*@elements[2],
+ v[0]*@elements[2] - v[2]*@elements[0],
+ v[1]*@elements[0] - v[0]*@elements[1] ]
end
#