函数求值(2)
求和:((1^2)/((1^2)-100+5000))+((2^2)/((2^2)-2*100+5000))+......+((99^2)/((99^2)-99*100+5000))=
1^/(1^-100+5000)+2^/(2^-2*100+5000)+...+99^/(99^-99*100+5000) =1^/(5000-1*99)+2^/(5000-2*98)+...+99^/(5000-99*1) =(1^+99^)/(5000-1*99)+...+(49^+51^)/(5000-49*50)+50^/(5000-50^) =2+2+...+1 =2*49+1 =99 [a^+(100-a)]/[5000-a(100-a)]=[2a^-200a+10000]/[5000-100+a^]=2
答：补充回答 n^4+2n^3+3n^2+2n+1 =(n^4+2n^3+n^2)+(2n^2+2n)+1 =(n^2+n)^2+2(n^2+n)+1 =(n^2+...详情>>
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