Các câu hỏi tương tự
so sánh:
\(\left[-\frac{1}{5}\right]^9và\left[-\frac{1}{25}\right]^5\)
so sánh 2 phân số:
\(\left[\frac{1}{243}\right]^9và\left[\frac{1}{83}\right]^{13}\)
So sánh hai phân số:
\(\left(\frac{1}{243}\right)^9và\left(\frac{1}{83}\right)^{13}\)
1, tim x bết:,frac{left(-5^4right).left(-15^2right)-5^4.left(-3^2.5right)}{left(-3^4right).25^2-left(-15^2right).225.5}:frac{x}{5}frac{-1}{6}2, cho Afrac{20}{30}+frac{20}{70}+frac{20}{126}+...+frac{20}{798}Bleft(frac{41}{2}.frac{42}{2}.frac{43}{2}...frac{80}{2}right):left(1.3.5...79right)So sánh A và B.3, Tính nhanh.frac{0,875+frac{1}{2}-7%-frac{1}{58}}{frac{1}{25}-frac{1}{2}-frac{2}{7}+frac{2}{203}}-125%HELP ME PLEASE......
Đọc tiếp
1, tim x bết:
,\(\frac{\left(-5^4\right).\left(-15^2\right)-5^4.\left(-3^2.5\right)}{\left(-3^4\right).25^2-\left(-15^2\right).225.5}\)\(:\)\(\frac{x}{5}\)\(=\frac{-1}{6}\)
2, cho A=\(\frac{20}{30}+\frac{20}{70}+\frac{20}{126}+...+\frac{20}{798}\)
B=\(\left(\frac{41}{2}.\frac{42}{2}.\frac{43}{2}...\frac{80}{2}\right):\left(1.3.5...79\right)\)
So sánh A và B.
3, Tính nhanh.
\(\frac{0,875+\frac{1}{2}-7\%-\frac{1}{58}}{\frac{1}{25}-\frac{1}{2}-\frac{2}{7}+\frac{2}{203}}\)\(-125\%\)
HELP ME PLEASE......
1. tính A frac{3}{2^2}.frac{8}{3^2}.frac{15}{4^2}...frac{899}{30^2}2. tính B frac{1}{4}.frac{2}{6}.frac{3}{8}.frac{4}{10}...frac{30}{62}.frac{31}{64}3. So sánh C left(1-frac{1}{2}right).left(1-frac{1}{3}right).left(1-frac{1}{4}right)...left(1-frac{1}{20}right)với frac{1}{21}4. So sánh D left(1-frac{1}{4}right).left(1-frac{1}{9}right).left(1-frac{1}{16}right)...left(1-frac{1}{100}right)với frac{11}{19}
Đọc tiếp
1. tính A= \(\frac{3}{2^2}.\frac{8}{3^2}.\frac{15}{4^2}...\frac{899}{30^2}\)
2. tính B= \(\frac{1}{4}.\frac{2}{6}.\frac{3}{8}.\frac{4}{10}...\frac{30}{62}.\frac{31}{64}\)
3. So sánh C= \(\left(1-\frac{1}{2}\right).\left(1-\frac{1}{3}\right).\left(1-\frac{1}{4}\right)...\left(1-\frac{1}{20}\right)\)với \(\frac{1}{21}\)
4. So sánh D= \(\left(1-\frac{1}{4}\right).\left(1-\frac{1}{9}\right).\left(1-\frac{1}{16}\right)...\left(1-\frac{1}{100}\right)\)với \(\frac{11}{19}\)
Tínha) left(1-frac{1}{2}right)left(1-frac{1}{3}right)...left(1-frac{1}{2018}right)b) left(1-frac{1}{3}right)left(1-frac{1}{6}right)left(1-frac{1}{10}right)left(1-frac{1}{15}right)...left(1-frac{1}{190}right)c) left(1+frac{7}{9}right)left(1+frac{7}{20}right)left(1+frac{7}{33}right)left(1+frac{7}{48}right)...left(1+frac{7}{2009}right)
Đọc tiếp
Tính
a) \(\left(1-\frac{1}{2}\right)\left(1-\frac{1}{3}\right)...\left(1-\frac{1}{2018}\right)\)
b) \(\left(1-\frac{1}{3}\right)\left(1-\frac{1}{6}\right)\left(1-\frac{1}{10}\right)\left(1-\frac{1}{15}\right)...\left(1-\frac{1}{190}\right)\)
c) \(\left(1+\frac{7}{9}\right)\left(1+\frac{7}{20}\right)\left(1+\frac{7}{33}\right)\left(1+\frac{7}{48}\right)...\left(1+\frac{7}{2009}\right)\)
Tính a) left(1-frac{1}{2}right)left(1-frac{1}{3}right)...left(1-frac{1}{2018}right)b) left(1-frac{1}{3}right)left(1-frac{1}{6}right)left(1-frac{1}{10}right)left(1-frac{1}{15}right)...left(1-frac{1}{190}right)c) left(1+frac{7}{9}right)left(1+frac{7}{20}right)left(1+frac{7}{33}right)left(1+frac{7}{48}right)...left(1+frac{7}{2009}right)
Đọc tiếp
Tính
a) \(\left(1-\frac{1}{2}\right)\left(1-\frac{1}{3}\right)...\left(1-\frac{1}{2018}\right)\)
b) \(\left(1-\frac{1}{3}\right)\left(1-\frac{1}{6}\right)\left(1-\frac{1}{10}\right)\left(1-\frac{1}{15}\right)...\left(1-\frac{1}{190}\right)\)
c) \(\left(1+\frac{7}{9}\right)\left(1+\frac{7}{20}\right)\left(1+\frac{7}{33}\right)\left(1+\frac{7}{48}\right)...\left(1+\frac{7}{2009}\right)\)
\(\frac{3}{\left(x-4\right)\left(x-7\right)}+\frac{6}{\left(2-7\right)\left(x-13\right)}+\frac{15}{\left(x-13\right)\left(x-28\right)}-\frac{1}{x-28}=-\frac{1}{20}\)
\(\frac{3}{\left(x-4\right)\left(x-7\right)}+\frac{6}{\left(2-7\right)\left(x-13\right)}+\frac{15}{\left(x-13\right)\left(x-28\right)}-\frac{1}{x-28}=-\frac{1}{20}\)