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# Answer: In each of 8 through 12 proceed as in 7. (a) Transform the given system into a ISBN: 9780470383346 394

## Solution for problem 9 Chapter 7.1

Elementary Differential Equations and Boundary Value Problems | 9th Edition

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Problem 9

In each of 8 through 12 proceed as in 7. (a) Transform the given system into a single equation of second order. (b) Find x1 and x2 that also satisfy the given initial conditions. (c) Sketch the graph of the solution in the x1x2-plane for t 0.

Step-by-Step Solution:
Step 1 of 3

L3 - 2 3. Two basic triangles π/3 π/6 π/4 4. Unit circle (r =1 ,osi θ = y and cosθ = x) π/2 2π/3 π/3 3π/4 π/4 π/6 5π/6 π 0 7π/6 11π/6 5π/4 7π/4 4π/3 5π/3 3π/2 θ 0

Step 2 of 3

Step 3 of 3

##### ISBN: 9780470383346

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