hw 306 week 12 s15
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Differential Equations 306 HW Week 12 Spring 2015
1. Power Series Solutions about Ordinary Points
8.1: 1-9 You should solve all problems 1-9 with 2 methods:1. separation of variables or integrating factors 2. power series;then show that these solutions are equivalent for problems 1-7 and 9. ( Omit showing the equivalence in 8.1: 8.)
8.1: 11-13 ; 8.2: 1-6
2. Ordinary, Regular and Irregular Singular Points
8.3: 1 – 8 Please identify singular points using the definition, as discussed in class.
3. Euler or Equidimensional Equation of Order 2
Find the general solution for the following differential equations. Please note that each has a RSP at x = 0 and that the interval of solution is x > 0.
a.
b.
c.
d.
e.
f.
g.
4. Method of Frobenius (These problems will probably be omitted from the HW.)
Each of the following differential equations has a regular singular point (RSP) at x = 0. Determine the indicial equation, the exponents of the singularity at 0, (i.e. the roots of the indicial equation) and the recurrence relation. Find the series solution for x > 0 corresponding to the larger root. If the indicial equation has a double root, find one solution.
a.
b.
c.
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d,