in spite of taking the sign conventions during the derivation why should we use it again while doing the problems?

Asked by Amrutha Varshini | 17th Jul, 2013, 05:23: PM

Expert Answer:

The signs need to be taken care of everytime you do any problem. Derivation is also a sort of problem and so, in order to derive the right thing, you need to keep sign conventions in mind as well as while solving any problems. 

Answered by  | 19th Jul, 2013, 09:25: AM

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