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Find a bound for the error |f(x)-P3(x)| in using P3(x) to approximated f(x) on the interval [-1/2,1/2]

*where f(x)=ln(1+x) abd P3(x) refers to the third-order Taylor polynomial.*

I found the Taylor series of f(x) seen below:

**x- x^2/2!+(2x^3)/3!**

I know the Taylor series expression has a remainder which in this case would be the 4th order polynomial and beyond but I am completely lost beyond this. Any help would be greatly appreciated!