100^3+99^3/100^3+1^+99^3+97^3/99^3+2^3……+51^3+1^/51^3+50^3=?
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/12 00:54:02
100^3+99^3/100^3+1^+99^3+97^3/99^3+2^3……+51^3+1^/51^3+50^3=?
(100^3+99^3)/(100^3+1^3)+(99^3+97^3)/(99^3+2^3)+……+(51^3+1^3)/(51^3+50^3)=?
规律是 (m^3+(m-n)^3)/(m^3+n^3)=(m+(m-n))/(m+n)
例子 (3^3+2^3)/(3^3+1^3)=(3+2)/(3+1)
(100^3+99^3)/(100^3+1^3)+(99^3+97^3)/(99^3+2^3)+……+(51^3+1^3)/(51^3+50^3)=?
规律是 (m^3+(m-n)^3)/(m^3+n^3)=(m+(m-n))/(m+n)
例子 (3^3+2^3)/(3^3+1^3)=(3+2)/(3+1)
(100^3+99^3)/(100^3+1^3)+(99^3+97^3)/(99^3+2^3)+(98^3+95^3)/(98^3+98^3+3^3)+...+(51^3+1^3)/(51^3+50^3)
=(100+99)/(100+1)+(99+97)/(99+2)+……+(51+1)/(51+50)
=(199+196+193+……+52)/101
=[(199+52)+(196+55)+……+(127+124)]/101
=251*25/101
=6275/101
=(100+99)/(100+1)+(99+97)/(99+2)+……+(51+1)/(51+50)
=(199+196+193+……+52)/101
=[(199+52)+(196+55)+……+(127+124)]/101
=251*25/101
=6275/101
100^3+99^3/100^3+1^+99^3+97^3/99^3+2^3……+51^3+1^/51^3+50^3=?
-1-2-2-3-3……-99-99-100
1*100+2*99+3*98+4*97+5*96+.+50*51=?,要有过程的、、、
1+2+3+……+99+100
-1-2-3-……-99-100
1十2十3…97+98+99+100
1*99+2*98+3*97+~+49*51=( )
1×3+2×4+3×5……+97×99+98×100=
1*100+2*99+3*98+4*97+(省略号)+50*51
1/100+3/100+5/100+……95/100+97/100+99/100=?
求1^3+2^3+……+99^3+100^3=【】
(1+2/3+2+3/4+3+4/5+……+97+98/99+98+99/100)/(3+1/3+5+2/4+7+3/5