For The Mathematically Inclined

PROBLEM #2

The students of a class are made to stand in rows. If three more students are added to each row, there would be one row less. If there was one less student in each row, would be two rows more. What is the number of students in the class?

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Problems from 08/01/13

PROBLEM #1
Calculate (1+i)/(1-i).

SOLUTION 1
i.

PROBLEM #2
What is the integral of (t/(t+1)) dt from t=1 to 3?

SOLUTION 2