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Search: Posts Made By: Yufeng
Forum: Long-Term Actuarial Math 08-27-2019, 06:22 AM
Replies: 6
Views: 2,350
Posted By Yufeng
You are right. I should have used the force of...

You are right. I should have used the force of interest delta, not d. Thanks.
Forum: Long-Term Actuarial Math 06-27-2019, 08:00 PM
Replies: 0
Views: 667
Posted By Yufeng
Guo's fall 2019 LTAM manual available

3 months of work including 1 week of proofreading. Finally, it's done.

You can order it from Actuarial Bookstore or Actex.

Here are some sample chapters.

Good luck to your fall LTAM exam.
Forum: Long-Term Actuarial Math 05-21-2019, 10:29 AM
Replies: 6
Views: 2,350
Posted By Yufeng
WA 3c was updated using the age-last-birthday based premium

WA 3c was updated. The ALB based premium is slightly lower than the exact age based premium.

By now, I think all the errors were fixed.
Forum: Long-Term Actuarial Math 05-20-2019, 11:11 AM
Replies: 6
Views: 2,350
Posted By Yufeng
MC q1 correction

I just realized that for MC q1 the selection factors are 0.75, not 0.80.

Joy, the first contributor, used 0.75 when she sent me her solutions, but somehow I changed 0.75 to 0.8 by mistake when I...
Forum: Long-Term Actuarial Math 05-20-2019, 09:15 AM
Replies: 6
Views: 2,350
Posted By Yufeng
Spring 2019 LTAM solution -- some errors were fixed

I want to thank Dr. Abraham Weishaus for pointing out some errors in the solution.

These errors were fixed.

Please download the new PDF.

Page 1 "Version history" section of the new PDF...
Forum: Long-Term Actuarial Math 05-19-2019, 02:43 PM
Replies: 6
Views: 2,350
Posted By Yufeng
Full Solution to Spring 2019 LTAM (MCs and WAs)

Here's the full solution to the spring 2019 LTAM.

Please email me an errors you found.

Have a good day!

Yufeng
Forum: Long-Term Actuarial Math 02-16-2019, 08:59 PM
Replies: 8
Views: 2,467
Posted By Yufeng
I had a typo

My solution to Fall 2018 LTAM MC Q9 has a typo in the recursive formula.

In the recursive formula, the correct term should be 10p60^(01). However, I wrote 11p60^(01). I must be drunk that day!
...
Forum: Long-Term Actuarial Math 01-14-2019, 11:15 AM
Replies: 1
Views: 1,096
Posted By Yufeng
Guo's 2019 spring LTAM is here

Congrats to those who passed.

For those who got a 4 or 5, congrats to you as well. You are so close! Given how surprising many questions are, you have done well.

I just sent my manuscript to...
Forum: Long-Term Actuarial Math 01-08-2019, 08:07 AM
Replies: 1
Views: 1,096
Posted By Yufeng
Guo's spring 2019 LTAM manual available Monday

I hope that you found my solutions to Fall 2018 LTAM useful.

I'm toward the end of proofreading my spring 2019 manuscript and plan to send my book to Actuarial Bookstore/Actex Monday.

For the...
Forum: Long-Term Actuarial Math 11-19-2018, 06:21 AM
Replies: 8
Views: 2,467
Posted By Yufeng
WA 1 -- why the information premiums in the first two years are lower

In case you are wondering why in WA 1 SOA tellls you that premiums in the first two years are lower.

This information is to support their profit signatures 84.74 for Year 1 and 80.35 Year 2. If...
Forum: Long-Term Actuarial Math 11-18-2018, 08:04 AM
Replies: 8
Views: 2,467
Posted By Yufeng
Yes; you can use recursive tV formula for WA 4

For WA 4, YES; you can use the recursive reserve formula to derive the reserve at any time.

Recursive tV formula should always work regardless of whether the premium is calculated under the...
Forum: Long-Term Actuarial Math 11-17-2018, 06:38 PM
Replies: 8
Views: 2,467
Posted By Yufeng
Guo's solution to Fall 2018 LTAM WA

Solution for Fall 2018 WA is here:

http://deeperunderstandingfastercalc.com/how2Solve/LTAM_Fall_2018_WA_sol.pdf

Thanks for reading.
Forum: Long-Term Actuarial Math 11-16-2018, 09:50 AM
Replies: 9
Views: 1,687
Posted By Yufeng
Thanks Bama for your corrections. Regarding...

Thanks Bama for your corrections.

Regarding how the 1st LTAM exam compares with previous MLC. The difference between this LTAM and the old MLC is like ACT (practical, no math tricks) vs old SAT...
Forum: Long-Term Actuarial Math 11-15-2018, 04:02 AM
Replies: 9
Views: 1,687
Posted By Yufeng
Guo's solution to Fall 2018 LATM MC

Here's my solution to the MC.

http://deeperunderstandingfastercalc.com/how2Solve/LTAM_Fall_2018_MC_sol.pdf

I plan to post my solution to WA this weekend.

Due to time constraint, I didn't...
Forum: Long-Term Actuarial Math 09-05-2018, 09:04 AM
Replies: 16
Views: 4,360
Posted By Yufeng
update on my study guide on Mary Hardy DII with waiting period chapter

In case you use my book or downloaded my sample chapter on Mary Hardy study note on DII with waiting period and max benefit periods.

I updated this chapter by correcting many notation errors. To...
Forum: Long-Term Actuarial Math 08-12-2018, 10:07 AM
Replies: 0
Views: 698
Posted By Yufeng
Guo's weekly LTAM webinars starting Monday

If you purchased my fall 2018 LTAM manual (full or partial), read on.

To help those who are using my LTAM study guide to prepare for the October 26, 2018 LTAM exam, I will be offering free weekly...
Forum: Long-Term Actuarial Math 07-26-2018, 09:47 AM
Replies: 16
Views: 4,360
Posted By Yufeng
how two new study notes are tested in LTAM sample questions

I took a quick look of how the two new study notes (Mary Hardy and Loss Model) are tested in the sample LTAM.

What's not surprising -- Most topics from the two study notes are covered in the...
Forum: Long-Term Actuarial Math 07-19-2018, 11:46 AM
Replies: 16
Views: 4,360
Posted By Yufeng
Good point Gandalf. It's not hard for the admin...

Good point Gandalf. It's not hard for the admin system to solve two equations using the solution formula.

I'm curious to know whether that pure-math approach was ever used in practice. I gather...
Forum: Long-Term Actuarial Math 07-19-2018, 09:10 AM
Replies: 16
Views: 4,360
Posted By Yufeng
what's out from MLC syllabus

Question: I have the old fall 2017 or spring 2018 MLC manual written by Author XYZ. I want to re-use it without buying a new one. Of course, I will read the two new study notes. What parts of the old...
Forum: Long-Term Actuarial Math 07-17-2018, 11:28 AM
Replies: 16
Views: 4,360
Posted By Yufeng
Sigus, I just called Actuarial Bookstore and...

Sigus,

I just called Actuarial Bookstore and Actex.

They are ready to print the manual for you and a few others who ordered it through phone. Go ahead and make your payment via phone and...
Forum: Long-Term Actuarial Math 07-16-2018, 03:07 PM
Replies: 16
Views: 4,360
Posted By Yufeng
Thanks for your interest. No coupon code is...

Thanks for your interest.

No coupon code is needed to get the 20% discount. I already told ABS and Actex to offer 20% discount to everyone at least for now. Just call in and you'll get the...
Forum: Long-Term Actuarial Math 07-16-2018, 01:30 PM
Replies: 16
Views: 4,360
Posted By Yufeng
Guo's full LTAM manual 20% off now

Hi Sigus,

I sent the manuscript to Actuarial Bookstore and Actex last night. It may take them a day or two to update their websites.

For the full manual, the digital version is $199 and the...
Forum: Long-Term Actuarial Math 07-12-2018, 08:38 AM
Replies: 16
Views: 4,360
Posted By Yufeng
Guo's LTAM study guide available now

I have two versions of LTAM for fall 2018:
(1) The smaller version (180+ pages) covers just the Mary Hardy study note and the loss model study note. $75 for pdf file and $99 for printed version....
Forum: Long-Term Actuarial Math 05-19-2018, 10:20 AM
Replies: 5
Views: 2,083
Posted By Yufeng
I thought more about Q5. The new drug will be a...

I thought more about Q5. The new drug will be a huge threat if I'm selling annuities. Now everyone lives longer if the new drug succeeds and my annuity business is going to bleed.

However, Q5 is...
Forum: Long-Term Actuarial Math 05-19-2018, 07:09 AM
Replies: 5
Views: 2,083
Posted By Yufeng
Q5 Part (c) (d) -- why risk is non diversifiable

Thanks NchooseK. You are right about WA Q1 Part (d). I used a wrong transition intensity. The final answer should be 0.4773 as you calculated.

Here's a more important question. I didn't solve WA...
Showing results 1 to 25 of 141

 

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