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Tìm x biết:
a) \(\dfrac{1}{5.8}+\)\(\dfrac{1}{8.11}+\)\(\dfrac{1}{11.14}+\)...\(+\dfrac{1}{x.\left(x+3\right)}\)\(=\dfrac{101}{1540}\)
b) \(\dfrac{1}{3}+\)\(\dfrac{1}{6}+\)\(\dfrac{1}{10}+\)...\(+\dfrac{2}{x.\left(x+1\right)}\)\(=\dfrac{99}{101}\)
1 + 1 + 1 +..................+ 1 = 2
5.8 8.11 11.14 x . ( x + 1 ) 3
Giups mk nha mk cần trong hôm nay ai nhanh mk tick cố gắng làm giúp mk
A= 3/2.5+3/5.8+3/8.11+3/11.14
1/5*8 + 1/8*11 + 1/11*14 + 1/x*(x+3) = 101/1540
Tính nhanh :
B = \(\frac{3}{2.5}+\frac{3}{5.8}+\frac{3}{8.11}+\frac{3}{11.14}\)
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000 )
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
Tìm x
a) ( x-1/2)+(x-1/4)+(x-1/8)+...+(x-1/512)=1
b) x+1/2+1/3+1/4+...+1/100=3/2+4/3+5/4+...+101/100
Giải rõ ràng giùm mk với nha
Tính nhanh
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000)
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
Tính
a) (x-1/2)+(x-1/4)+(x-1/8)+...+(x-1/512)
Tìm x
a) (x-1/1×2)+(x-1/2×3)+...+(x-1/100×101)
b) (x-1)+(x-2)+(x-3)+...+(x-101)=5050
c) x+1/2+1/3+1/4+...+1/100=3/2+4/3+5/4++...+101/100
