Các câu hỏi tương tự
Tính
\(\frac{18.275+3.666+}{1+4+7+...+58+61+62.3+62.4-271}\) \(\frac{9.614,2}{71}\)
giải các bất phương trình:
\(\frac{x+1}{65}+\frac{x+3}{63}< \frac{x+5}{61}+\frac{x+7}{59}\)
\(\frac{1909-x}{91}+\frac{1907-x}{93}+\frac{1905-x}{95}+\frac{1903-x}{97}+4< =2x-1\)
1.Tìm x biết:left(1+frac{1}{2}+frac{1}{3}+...+frac{1}{2011}+frac{1}{2012}right).503x1+frac{2014}{2}+frac{2015}{3}+...+frac{4023}{2011}+frac{4024}{2012}2. Tìm x biết:left(frac{8}{1.9}+frac{8}{9.17}+...+frac{8}{49.57}right)+frac{58}{57}+2.left(x-1right)2x+frac{7}{3}+5x-frac{8}{4}3. Chứng minh với mọi n1 thì:left(1+frac{1}{1.3}right).left(1+frac{1}{2.4}right)....left(1+frac{1}{n.left(n+2right)}right)2
Đọc tiếp
1.Tìm x biết:
\(\left(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2011}+\frac{1}{2012}\right).503x=1+\frac{2014}{2}+\frac{2015}{3}+...+\frac{4023}{2011}+\frac{4024}{2012}\)
2. Tìm x biết:
\(\left(\frac{8}{1.9}+\frac{8}{9.17}+...+\frac{8}{49.57}\right)+\frac{58}{57}+2.\left(x-1\right)=2x+\frac{7}{3}+5x-\frac{8}{4}\)
3. Chứng minh với mọi n>1 thì:
\(\left(1+\frac{1}{1.3}\right).\left(1+\frac{1}{2.4}\right)....\left(1+\frac{1}{n.\left(n+2\right)}\right)<2\)
Tìm x :
\(\frac{8}{1.9}+\frac{8}{1.17}+...+\frac{8}{49.57}+\frac{58}{57}+2x-2=2x+\frac{7}{3}+5x-\frac{8}{4}\)
Tìm x:
\(\frac{8}{1.9}+\frac{8}{9.17}+...+\frac{8}{49.57}+\frac{58}{57}+2x-2=2x+\frac{7}{3}+5x-\frac{8}{4}\)
Giải pt: \(\frac{x+1}{65}+\frac{x+3}{63}=\frac{x+5}{61}+\frac{x+7}{59}\)
giải các pt sau
\(\frac{x+1}{3}+\frac{3\left(2x+1\right)}{4}=\frac{2x+3\left(x+1\right)}{6}+\frac{7+12x}{12}\)
\(\frac{2\left(3x+1\right)+1}{4}-5=\frac{2\left(3x-1\right)}{5}-\frac{3x+2}{10}\)
\(\frac{3\left(x-3\right)}{4}+\frac{4x-10.5}{10}=\frac{3\left(x+1\right)}{5}+6\)
\(\frac{x+1}{58}+\frac{x+2}{57}=\frac{x+3}{56}+\frac{x+4}{55}\)
1.Tìm các số thực a, b, c biết:frac{5x^2-2}{x^3-3x-2}frac{a}{x-2}+frac{b}{x+1}+frac{c}{left(x+1right)^2}2.giải các phương trình sau:a) frac{x+3}{35}+frac{x+3}{45}+frac{x+3}{54}0b)frac{2x-1}{85}+frac{2x-1}{58}frac{2x-1}{62}c)frac{x1}{100}+frac{x+2}{99}+frac{x+3}{98}-3d)frac{x+13}{2010}+frac{x+12}{2011}frac{x+11}{2012}+frac{x+10}{2013}e)frac{845-x}{345}+frac{771-x}{271}frac{687-x}{187}+frac{529-x}{29}
Đọc tiếp
1.Tìm các số thực a, b, c biết:
\(\frac{5x^2-2}{x^3-3x-2}=\frac{a}{x-2}+\frac{b}{x+1}+\frac{c}{\left(x+1\right)^2}\)
2.giải các phương trình sau:
a) \(\frac{x+3}{35}+\frac{x+3}{45}+\frac{x+3}{54}=0\)
b)\(\frac{2x-1}{85}+\frac{2x-1}{58}=\frac{2x-1}{62}\)
c)\(\frac{x=1}{100}+\frac{x+2}{99}+\frac{x+3}{98}=-3\)
d)\(\frac{x+13}{2010}+\frac{x+12}{2011}=\frac{x+11}{2012}+\frac{x+10}{2013}\)
e)\(\frac{845-x}{345}+\frac{771-x}{271}=\frac{687-x}{187}+\frac{529-x}{29}\)
Giải phương trình:
\(\frac{x+1}{58}+\frac{x+2}{57}=\frac{x+3}{56}+\frac{x+4}{55}\)