i think it may help
total derivative in wiki
Total derivative - Wikipedia, the free encyclopedia
i didn't study maths for a long time and i really dun know how to prove it(total derivative) , can anyone tell me?
i think it may help
total derivative in wiki
Total derivative - Wikipedia, the free encyclopedia
i didn't study maths for a long time and i really dun know how to prove it(total derivative) , can anyone tell me?
ohh well actually in my question the dA/db, dA/dc ( the ds are supppose the del letter (or im not sure how it is called.)
If a, b ,c are the sides of a triangle and A B C are the opposite angles, find dA/da , dA/db, dA/dc by implicit differentiation of the law of cosines.
i really dont know how to di this, can anyone plz help me thank u