ok i dont know how to find the error bound plz help?

http://www.webassign.net/www32/symIm...7edd1305a2.gif
(a) Approximate

*f* by a Taylor polynomial with degree

*n* at the number

*a*.

*T*2(

*x*) = Enter a mathematical expression.

12+(1/4)*(x-4)-(1/64)*(x-4)^2

(b) Use Taylor's Inequality to estimate the accuracy of the approximation

*f* http://www.webassign.net/images/apx.gif *Tn(x)* when

*x* lies in the given interval. (Round the answer to six decimal places.)

i think i find M to be .001953125 to use in the formula (M/(n+1)!)|x-a|^n+1 but i dont know what to do on this anyone help? THANKS!