General Discussion

Post your questions and General discussions here.

Where is the problem? :(

FIRST ATTEMPT:
I did read Rita book twice and took the first exam but not pass, I understands all concepts in the book, save equations, did perfect summary for the book, and solve all book's questions.  In the exam, when there was 10 minutes left, about 30 questions were needed to be answered. So managing time was bad in that practice. This was in last December.
 
SECOND ATTEMPT:

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