freeware http://groups.yahoo.com/group/mathc/

* Calculus : Vectors 2d 3d.

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Windows : Dev-C++ 4
Linux : gcc abc.c -lm Return
a.out Return

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* You can compile the *.c files directly without create a project.

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c14a_1a.c : Magnitude, Unit vector. (2d)
c14a_1b.c : (3d)

c14a_2a.c : Vector PQ. (2d)
c14a_2b.c : (3d)

c14a_3a.c : Draw the vector u. (2d)
c14a_3b.c : (3d)

c14a_4a.c : Draw the vector PQ. (2d)
c14a_4b.c : (3d)

c14a_5a.c : Draw the vectors u, v. (2d)
c14a_5b.c : (3d)

c14a_6a.c : The dot product u.v. (2d)
c14a_6b.c : (3d)

c14a_7b.c : The vector product u x v.

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The members can try these links :

http://groups.yahoo.com/group/mathc/files/C/D/c14a.zip