Error estimate for Simpsons rule?

L

lizx002

New member
I'm having trouble calculating the error estimate for the integral from 0 to 4 cos(x) dx using 8 subdivisions which = -.7571.

i know that your supposed to take the 4th derivative of cos(x) but thats as far as i know.

after this im supposed to figure out how large the subdivisions need to be in order for the answer to be within 0.000001.

any help or ideas please just let me know.
 
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