Dear Ricky:
I had a very heavy cold, go to the hospital tomorrow, and therefore can not go to class tomorrow. Tomorrow's course is very important, I think the trouble you remember good class notes. Tomorrow I prep course again, but there are some places do not understand. General Solution of second order differential equations in the middle of the course I did not understand, ask the teacher to trouble you tomorrow. Biot - Savart trouble you focus in mind, I will carefully ask you tomorrow.
Sam
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