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bingliantech

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Posts posted by bingliantech


  1. I know the Jacobian of the coordinate transformation measures how much the transformation is expanding or contracting the area around a point in G as G is transformed into R.

    My question is why we need the Jacobian in the transformation,the deltaA which represent small area go into almost zero in the integral,and the deltaS which represnt the transformed small area also go into zero,why we need the Jacobian to measure the multiple.

     


  2.  

    In particular he has mixed the vector based approach with the traditional geometric one, omitting important parts of both.

     

    We can discuss this further if you wish.

     

    Are you familiar with the vector dot product?

    Yes,i found Strang's linear algebra is very good and it's the reason why i want reading his calculus carefully.

    I generally read his linear algebra several days ago so i think i may have the basic understanding of vector dot product.

    Could you tell me the omiting parts ?I can understand f should be devided by s,it's not difiicult to be understood,i just be puzzled with his reason or his explanation.

     

    to imatfaal

    It's a good idea to watch the video of lecture,but i don't listen english often,maybe i can make a try.

     

    Thank you!

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