(a) Consider the ODE y' + tan(ax)y = sin(ax), where a is a nonzero real number. Find an integrating factor without using an exponential, but instead, a trig function. Then solve. If you used the standard method for finding an integratin factor, would anything in your solution have changed? (b) Repeat the steps in part (a) for the ODE y' + cot(ax)y – sin(ax) = 0.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Just B and C. I'm having a hard time doing this NOT using standard method.

(a) Consider the ODE y' + tan(ax)y = sin(ax), where a is a nonzero real number. Find an
integrating factor without using an exponential, but instead, a trig function. Then solve.
If
you
used the standard method for finding an integratin factor, would anything in your
solution have changed?
(b) Repeat the steps in part (a) for the ODE y' + cot(ax)y – sin(ax) = 0.
(c) Do you see a pattern? Can you come up with another example of a linear ODE that can
be solved with an integrating factor found without using the standard formula? If so,
does using the standard formula result in the same integrating factor?
Transcribed Image Text:(a) Consider the ODE y' + tan(ax)y = sin(ax), where a is a nonzero real number. Find an integrating factor without using an exponential, but instead, a trig function. Then solve. If you used the standard method for finding an integratin factor, would anything in your solution have changed? (b) Repeat the steps in part (a) for the ODE y' + cot(ax)y – sin(ax) = 0. (c) Do you see a pattern? Can you come up with another example of a linear ODE that can be solved with an integrating factor found without using the standard formula? If so, does using the standard formula result in the same integrating factor?
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