\(=\dfrac{1}{2}\times\dfrac{2}{3}\times\dfrac{3}{4}\times...\times\dfrac{2021}{2022}\\ \dfrac{1}{2022}\)
\(=\dfrac{1}{2}\times\dfrac{2}{3}\times\dfrac{3}{4}\times...\times\dfrac{2021}{2022}\\ \dfrac{1}{2022}\)
Tính giá trị của biểu thức sau:
x.\(\dfrac{1}{3}\) + 2x. \(\dfrac{3}{6}\) - 3x. \(\dfrac{4}{9}\) với x = 2022\(^{2023}\)
1. Tính giá trị biểu thức sau :
A = x.\(\dfrac{1}{5}\) + x.\(\dfrac{2}{3}\) - x.\(\dfrac{1}{4}\) với x = \(\dfrac{1}{2}\)
Tìm x, biết:
( \(\dfrac{1}{2}\) + \(\dfrac{1}{3}\) + \(\dfrac{1}{4}\) + ... + \(\dfrac{1}{2023}\) ) . x = \(\dfrac{2022}{1}\) + \(\dfrac{2021}{2}\) + \(\dfrac{2020}{3}\)
+ ... + \(\dfrac{1}{2022}\)
Tính giá trị của biểu thức A=\(1\dfrac{1}{2}\)x\(1\dfrac{1}{3}\)x\(1\dfrac{1}{4}\)x...x\(1\dfrac{1}{99}\)
tính giá trị biểu thức sau :
B=(\(1-\dfrac{1}{2}\))x(\(1-\dfrac{1}{3}\))x(\(1-\dfrac{1}{4}\))x(\(1-\dfrac{1}{5}\)).............(\(1-\dfrac{1}{2003}\))x(\(1-\dfrac{1}{2004}\))
(x-\(\dfrac{1}{3}\))2 - \(\dfrac{1}{2}\) = \(1\dfrac{3}{4}\)
\(\dfrac{x-3}{-2}\)=\(\dfrac{-8}{x-3}\)
\(\dfrac{9}{x}\)=\(\dfrac{-35}{105}\)
Giusp em với ạ
Tính giá trị biểu thức: M= \(\left(\dfrac{\dfrac{2}{5}-\dfrac{2}{9}+\dfrac{2}{11}}{\dfrac{7}{5}-\dfrac{7}{9}+\dfrac{7}{11}}-\dfrac{\dfrac{1}{3}-\dfrac{1}{3}+\dfrac{1}{5}}{1\dfrac{1}{6}-\dfrac{7}{8}+\dfrac{7}{10}}\right):\dfrac{2021}{2022}\)
giải giúp mình với:
tính tổng của A biết:
A= \(\dfrac{1}{2}\)+ \(\dfrac{1}{3}\)+ \(\dfrac{1}{4}\)+....+ \(\dfrac{1}{2022}\)+\(\dfrac{1}{2023}\)
Tính giá trị của biểu thức:
\(A=\dfrac{-3}{7}.\dfrac{5}{9}+\dfrac{4}{9}.\dfrac{-3}{7}+\left(-2022\right)^0\)
\(B=0,75-\left(2\dfrac{1}{3}+0,75\right)+3^2.\left(-\dfrac{1}{9}\right)\)
\(C=2\dfrac{6}{7}.\left[\left(\dfrac{-7}{5}-\dfrac{3}{2}:\dfrac{-5}{-4}\right)+\left(\dfrac{3}{2}\right)^2\right]\)
\(D=\dfrac{2}{7}+\dfrac{5}{7}.\left(\dfrac{3}{5}-0,25\right).\left(-2\right)^2+35\%\)
\(E=1\dfrac{13}{15}.0,75-\left(\dfrac{11}{20}+25\%\right):1\dfrac{2}{5}\)
\(F=\dfrac{\dfrac{5}{3}-\dfrac{5}{7}+\dfrac{5}{9}}{\dfrac{10}{3}-\dfrac{10}{7}+\dfrac{10}{9}}\)