linear algebra, vector, linear transformation, matrix, dot product , cross product

Ref:

• https://www.geogebra.org/m/TSQk4yCY (vvvi for linear transformation)
• https://www.youtube.com/watch?v=fNk_zzaMoSs&list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab&index=1 (VVVVVI for linear basic, vector , linear transformation)

  dot product , cross product

1.  https://physics.stackexchange.com/questions/333877/can-anyone-tell-me-that-actually-what-vector-multiplication-is
2. https://physics.stackexchange.com/questions/14082/what-is-the-physical-significance-of-dot-cross-product-of-vectors-why-is-divi
3. https://en.wikipedia.org/wiki/Dot_product
4. https://en.wikipedia.org/wiki/Cross_product#Geometric_meaning (VVI) 
5. https://www.youtube.com/watch?v=KDHuWxy53uM&feature=youtu.be (dot product discription ****) 
6. https://math.stackexchange.com/questions/805954/what-does-the-dot-product-of-two-vectors-represent (see accepted answer **** )

dot product:

The dot product tells you what amount of one vector goes in the direction of another.


Cross product : (https://en.wikipedia.org/wiki/Cross_product#Geometric_meaning)