Unless explicitely noted, the problems have to solved without the help of mathematical software packages like Mathematica or Maple.
You have to include explanations in your solution - we are not only interested in the final result, but also in how you obtained it. Any solution without a satisfactory amount of intermediate steps and explanations will incur point deductions - the same applies to illegible handwriting and sloppy presentation of the solution.
Even though the problems are due on Wednesday, it is unwise to first start working on them Monday or Tuesday night. Plan on starting on them prior to the weekend so you can invest the added time if needed!