# MATH 425, HOMEWORK 1, SOLUTIONS

**MATH 425, HOMEWORK 1, SOLUTIONS** 3 Again, we need to choose the functions h 1 and h 2 in such a way that the function u is di erentiable. b) Since the value of u is given on the y-axis, it follows that the solution is uniquely determined along the characteristic curves which intersect the y-axis. These includes the upwards and downwards

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