IFoA_CAA_M0 Exam - Topic 1 Question 34 Discussion

Actual exam question for IFoA's IFoA_CAA_M0 exam

Question #: 34
Topic #: 1

[All IFoA_CAA_M0 Questions]

The particular solution of the second-order difference equation

yn+2 - 6yn+1 + 8yn = 0 n 2

subject to the initial conditions y0 = 3 and y1 = 2may be written in the form

yn = A(2n) + B(4n) n 0.

Determine the values of (A, B).

A(-2, 5)

B(-2, 3)

C(-3, 2)

D(5, -2)

Show Suggested Answer

Suggested Answer: D

by Fabiola at May 06, 2022, 02:19 PM

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Janessa

8 months ago

Are we sure those initial conditions are right?

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Rodney

8 months ago

Wait, how do we even get those values?

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Karon

8 months ago

I think it's option B, but not too sure.

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Tiera

8 months ago

Totally agree, it's definitely a second-order linear equation!

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Gwenn

9 months ago

The characteristic equation gives roots 2 and 4.

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Ilda

9 months ago

I’m leaning towards option A, but I’m not completely confident. I hope I remember the substitution method correctly!

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Adaline

9 months ago

I feel like I’ve seen the form yn = A(2^n) + B(4^n) before, but I can’t recall how to solve for A and B specifically.

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Quinn

9 months ago

I think the characteristic equation should help us find the roots, but I’m a bit confused about how to use them with the initial values.

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Doug

9 months ago

I remember we practiced a similar difference equation in class, but I’m not sure how to apply the initial conditions here.

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Daren

9 months ago

I think the most likely reason is that the developer didn't call the AllocatePublicIpAdress API, which is needed to assign a public IP. That seems like the key step that was likely missed.

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Yaeko

9 months ago

Citrix Workspace ADMX templates seem like they could be a good fit here. That would allow me to centrally manage those settings across the environment.

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Rebeca

9 months ago

I'm leaning towards "yum" because I recall it being used for package management in similar questions.

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