

FlashChat  Actuarial Discussion  Preliminary Exams  CAS/SOA Exams  Cyberchat  Around the World  Suggestions 
Salary Surveys 
Health Actuary Jobs 
Actuarial Recruitment 
Casualty Jobs 
Probability Old Exam P Forum 

Thread Tools  Search this Thread  Display Modes 
#1




Exam P Shortcuts
So I'm sitting in November on the 10th and as I have two weeks until the exam, I have been looking for more shortcuts to save me time overall. I am familiar with the Darth Vader rule but not much more.
Are there any other shortcuts I should be aware of?
__________________
Quote:
"Those who fail to plan, plan to fail. Therefore, I must plan my work, and work my plan." 
#2




One shortcut that I really like is the bernoulli shortcut for variance.
If you have an event,X, with TWO possible outcomes; A with probability p, and B with probability 1p, Then Var(X)= ((ab)^2)p*(1p). this is useful when you are calculating Var(E(YX)), and X has two outcomes. Var(E(YX)) becomes (ab)^2 * p *(1p). Im sitting on the 11th, let me know if you have any other shortcuts! 
#3




If you ever need to integrate an exponential times a power of t with bounds that aren't 0 to infinity (cuz those you can just use 1/u and 1/u^2 to find them), then instead of going through integration by parts or tabular integration, it ends up being e^t*(original function + 1st derivative + 2nd derivative etc.) until you get to 0.
For example, Integral of t^2*e^t = e^t*(t^2 + 2t + 2). If the t in your exponential is being multiplied by a constant, then out front put 1 over that constant raised to whatever the original power of t is. I found this to be a very nice time saver instead of doing integration by parts or tabular integration for t and t^2 times an exponential.
__________________

Thread Tools  Search this Thread 
Display Modes  

