# numerical analysis - need help

Discussion in 'Math' started by renathy, Mar 10, 2011.

1. ### renathy Thread Starter New Member

Mar 10, 2011
1
0
I have integral:

Int(-1;1) x^4 dx

Need to solve it using numerical integration.
Q(f) = A1(f(a)) + A2(f(x1)) + A3 (f(b))

A1 -?
A2 -?
A3 -?
x1- ?

Soulve integral and find error. Need to solve without programming (just on paper).
I am a little bit confused in solving this. Probably Simpson formula can be used, but not sure... My result has too big error.

2. ### Heavydoody Active Member

Jul 31, 2009
140
11
n must be even for Simpson's rule. I suspect you are supposed to use the trapezoidal rule here...but that's a guess based on the format and what is being asked.

3. ### Heavydoody Active Member

Jul 31, 2009
140
11
No, I am wrong, n is even (I forgot that a is x0). I get .67 using Simpson's rule, for a 67 percent error.

Last edited: Mar 10, 2011
4. ### Black-Bird New Member

Jan 26, 2011
23
0
Numerical Analysis : my worst nightmares ?

good luck