BC help on audit exam!

Ginseng1981
Sun, 01 May 2011 13:35:05 +0000

I couldn’t get that one either.
the lagrange bound error is f^n+1(c)x^(n+1)/(n+1)!. In this case n=3 because they are asking the error for the third term. X is equal to 1 because that is the default in this case. You also use c as 1 since its the max on the interval (to get hte max error). You plug in and u get f^4(1)*1^4/4! which is the same as e^sin(1)/4!. Don’t worry this audit exam was hard as hell. I heard the real thing is a lot easier.
They just want a power series of order 3. Plug in numbers 1-4 into the n. then put an x to that power n next to each of the numbers and put them over n!. its just a simple f^n(0)x^n/n!.