=====Mathematics 255 - Spring 2017=====

==== Homework ====

Problems 2-7: 1, 2, 3, 4

Also: Solve the following equations:
  - $yy'' + (y')^2 = 0$
  - $xy'' = y' + (y')^3$

Answers:
  - $y^2 = c_1x + c_2$
  - $x^2 + (y - c_2)^2 = c_1^2$