Please provide a detailed explanation. Prove by induction on n that nk =2K/(2K - 1)2(2K + 1)2 = n2 + n/(2n + 1)2.| Solution Consider for n=1 LHS=2*1/[(2-1)^2*(2+1)^2] =2/9 RHS=(1^2+1)/(2+1)^2 =2/9 Hence the given expression is true for n=1 consider the given expression is true for n hence k=1n (2k/(2k-1)^2(2k+1)^2)=n^2+n/(2n+1)^2---------->A consider for n+1 LHS= k=1n+1 (2k/(2k-1)^2(2k+1)^2) =[k=1n (2k/(2k-1)^2(2k+1)^2) ]+(2*(n+1)/(2(n+1)-1)^2*(2(n+1)+1)^2) =(n^2+n)/(2n+1)^2 +(2(n+1)/(2n+1)^2*(2n+3)^2) =[(n+1)/(2n+1)^2]*(n+(2/(2n+3)^2)) =[(n+1)/(2n+1)^2]*(n*((2n+1)+2)^2)+2)/(2n+3)^2 =[(n+1)/(2n+1)^2]*(n*(2n+1)^2+n*2*(2n+1)*2+n*4+2)/(2n+3)^2 =[(n+1)/(2n+1)^2]*(n*(2n+1)^2+n*2*(2n+1)*2+2*(2n+1))/(2n+3)^2 =[(n+1)/(2n+1)]*(n*(2n+1)+4n+2)/(2n+3)^2 =[(n+1)/(2n+1)]*(n*(2n+1)+2*(2n+1))/(2n+3)^2 =(n+1)*(n+2)/(2n+3)^2 =(n+1)(n+2)/(2n+3)^2 RHS=((n+1)^2+(n+1))/(2(n+1)+1)^2 =(n+1)(n+1+1)/(2n+3)^2 =(n+1)(n+2)/(2n+3)^2 since LHS=RHS The given expression is true for n+1 Hence by principle of mathematical induction,the given expression is true for all values of n..