Xx0,5+Xx0,25x6+Xx0,5x4=8
Xx0,5+Xx1,5+Xx2=8
Xx(0,5+1,5+2)=8
Xx4 =8
X =8:4
X =2
Xx0,5+Xx0,25x6+Xx0,5x4=8
Xx0,5+Xx1,5+Xx2=8
Xx(0,5+1,5+2)=8
Xx4 =8
X =8:4
X =2
tim x
x:2+x:4x6+x:2x4
tìm y:
(2/2x4 + 2/4x6 + 2/6x8 + 2/8x10) x y = 1/3
Tính :
N = ( 1/2x4 + 1/4x6 + 1/6x8 + 1/8x10 + ....... + 1/98 X 100 ) : ( 1/2 + 1/4 + 1/8 + 1/16 + ........ + 1/512 )
(1+1/1x3)x(1+1/2x4)x(1+1/3x5)x(1+1/4x6)x(1+1/5x7)
Bài 1 tìm y
a) (1/2x4+1/4x6+1/6x8+1/8x10)x y =1/3
b) y:8+y x8-56,78=69,11x2
\(\frac{4}{2x4}x\frac{4}{4x6}x\frac{4}{6x8}x.......x\frac{4}{16x18}x\frac{4}{18x20}\)
A = 2/2x4 + 2/4x6 + 2/6x8 ................ +2/2014 x 2016
Đố ai làm được
làm hộ mình đi
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
tìm x biết ( 1/2x4 + 1/4x6 + 1/6x8 ...+ 1/18x20) x 10 - \(x\) = 0