Violympic toán 7
Các câu hỏi tương tự
Cho A= \(\frac{1}{2015}+\frac{2}{2016}+\frac{3}{2017}+...................+\frac{2016}{4030}-2016\) và B= \(\frac{1}{2015}+\frac{1}{2016}+\frac{1}{2017}+...................+\frac{1}{4030}\) . Chứng minh rằng \(\frac{A}{B}\) là một số nguyên
Cho A= \(\frac{1}{2015}+\frac{2}{2016}+\frac{3}{2017}+...................+\frac{2016}{4030}-2016\) và B= \(\frac{1}{2015}+\frac{1}{2016}+\frac{1}{2017}+...................+\frac{1}{4030}\) . Chứng minh rằng \(\frac{A}{B}\) là một số nguyên
Cho
\(A=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+...+\frac{1}{2016}+\frac{1}{2017}\)
\(B=\frac{2016}{1}+\frac{2015}{2}+...+\frac{2}{2015}+\frac{1}{2016}\)
Tính \(\frac{B}{A}\) ?
Cho \(A=\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2017}\); \(B=\frac{1}{2016}+\frac{2}{2015}+\frac{3}{2014}+...+\frac{2015}{2}+\frac{2016}{1}\)
Tính \(\frac{A}{B}\)
Cho Afrac{1}{2}+frac{1}{3}+frac{1}{4}+...+frac{1}{2017}
Bfrac{1}{2016}+frac{2}{2015}+frac{3}{2014}+...+frac{2015}{2}+frac{2016}{1}
Tínhfrac{A}{B}
Đọc tiếp
Cho A=\(\frac{1}{2}\)+\(\frac{1}{3}\)+\(\frac{1}{4}\)+...+\(\frac{1}{2017}\)
B=\(\frac{1}{2016}\)+\(\frac{2}{2015}\)+\(\frac{3}{2014}\)+...+\(\frac{2015}{2}\)+\(\frac{2016}{1}\)
Tính\(\frac{A}{B}\)
Cho các số nguyên dương a,b,c,d và \(\frac{a}{b}=\frac{c}{d}\)
Chứng minh rằng: \(\frac{\left(a^{2016}+b^{2016}\right)^{2017}}{\left(c^{2016}+d^{2016}\right)^{2017}}=\frac{\left(a^{2017}-b^{2017}\right)^{2016}}{\left(c^{2017}-d^{2017}\right)^{2016}}\)
\(A=1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+...-\frac{1}{2016}+\frac{1}{2017}-\frac{1}{2018}\)
\(B=\frac{1}{1010}+\frac{1}{1011}+...+\frac{1}{2016}+\frac{1}{2017}+\frac{1}{2018}\)
Tính \(\left(A^{2017}-B^{2017}\right)^{2018}\)
Tính B\(=\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2017}}{\frac{2016}{1}+\frac{2003}{2}+\frac{2002}{3}+...+\frac{1}{2016}}\)
a)frac{x+1}{5}+frac{x+1}{6}+frac{x+1}{7}frac{x+1}{8}+frac{x+1}{9}
b)frac{x+6}{2015}+frac{x+5}{2016}+frac{x+4}{2017}frac{x+3}{2018}+frac{x+2}{2019}+frac{x+1}{2010}
c)frac{x+6}{2016}+frac{x+7}{2017}+frac{x+8}{2018}frac{x+9}{2019}+frac{x+10}{2020}+1
d)frac{x-90}{10}+frac{x-76}{12}+frac{x-58}{14}+frac{x-36}{16}+frac{x-15}{17}15
ai xong nhanh nhất và đúng em xin gửi 2 SP ạ
Đọc tiếp
a)\(\frac{x+1}{5}+\frac{x+1}{6}+\frac{x+1}{7}=\frac{x+1}{8}+\frac{x+1}{9}\)
b)\(\frac{x+6}{2015}+\frac{x+5}{2016}+\frac{x+4}{2017}=\frac{x+3}{2018}+\frac{x+2}{2019}+\frac{x+1}{2010}\)
c)\(\frac{x+6}{2016}+\frac{x+7}{2017}+\frac{x+8}{2018}=\frac{x+9}{2019}+\frac{x+10}{2020}+1\)
d)\(\frac{x-90}{10}+\frac{x-76}{12}+\frac{x-58}{14}+\frac{x-36}{16}+\frac{x-15}{17}=15\)
ai xong nhanh nhất và đúng em xin gửi 2 SP ạ