Write a partial sum for the power series, URGENT Consider the function ln(1+4x). Write a partial sum for the power series which represents this function consisting of the first 5 nonzero terms. For example, if the series were Sigma from n=0 to infinity of 3^nx^2n , you would write 1+3x2+3^2x^4+3^3x^6+3^4x^8. Also indicate the radius of convergence. I got a power series = Sigma from n=0 to infinity of [(-1)^n(4^2n+1)(x^n+1)] / n+1 I got partial sum = 4x-32x^2+(1024/3)x^3-(16384/4)x^4+(262144/5)x^5 and radius of convergence = 1/4 radius of convergence is correct. But it says I have the partial sum wrong? please help!