Các câu hỏi tương tự
tìm A,B biết
A=( 1+ 1/1x3 ) x (1+1/2x4) x (1+1/3x5) x ( 1+1/4x6 ) x(1+1/5x7)
B = 1/2+1/4+1/8 +1/6 + .... + 1/128+1/256
giai duoc cai gi minh cung tick cho
a)1/1x3+1/3x5+1/5x7+...+1/Xx(x+3)=99/200
b)1/1x3+1/3x5+1/5x7+...+1/Xx(x+2)
(1+1/1x3)x(1+1/2x4)x(1+1/3x5)x...x(1+1/99x101)
A=(1+1/1x3)x(1+1/2x4)x(1+1/3x5)x...x(1+1/99x101)
a, 2/1x3 + 2/3x5 + 2/5x7 + 2/7x9 +...+ 9/913 x 215
b,1/1x3 + 1/3x5 + 1/5x7 + 1/7x9 + 1/213 x 215
[ Giúp mik với mấy bạn ơi ai nhanh mình sẽ tick nha TvT ]
( Toán tính nhanh nha )
a,1/1x3+1/3x5+1/5x7+1/7x9+1/X=1;b,2/3-1/3x(X-2)=1/4
0,8 x 2 x 48 + 1,6 x 2 + 50 x 1,6
câu 2 : 1/1x3 + 1/3x5 + 1/ 5x7+1/7x9
Tính:
1, A = 1/1x3 + 1/3x5 + 1/5x7 + ... + 1/2019 x 2021
2, B= 4/11x16 + 4/16x21 + 4/21x26 + ... + 4/61x66
tinh nhanh
\(\left(1-\frac{1}{1x3}\right)x\left(1-\frac{1}{2x4}\right)x\left(1-\frac{1}{3x5}\right)x....x\left(1-\frac{1}{20x22}\right)\)