B= (1-1/2)* (1-1/3)*...............(1-1/2004)
= 1/2*2/3*........* 2003/2004
=(1*2*3*...*2003)/(2*3*4*...*2004)
= 1/2004
k cho mình nha
B= (1-1/2)* (1-1/3)*...............(1-1/2004)
= 1/2*2/3*........* 2003/2004
=(1*2*3*...*2003)/(2*3*4*...*2004)
= 1/2004
k cho mình nha
Ai lam minh tik cho nha
Tinh gia tri bieu thuc sau :
B = (1-1-2)×(1-1/3)×(1-1/4)×(1-1/5)...... (1-1/2003)×(1-1/2004
tinh gia tri bieu thuc (1+1/2)x(1+1/3)x(1+1/4)x...x(1+1/2013)
tinh gia tri cua bieu thuc :
a] (18 1/2 + 5 3/8 - 7 5/24) : 16 2/3
b] 2005 x 2007 -1 / 2004 + 2005 x 2006
tinh gia tri bieu thuc
[6 : 3/5 - 1 va 1/6 x 6/7] : [4 va 1/5 x 10/11 + 5 va 2/11]
tinh gia tri bieu thuc :
a/ 1+(1+2)+(1+2+3)+...+(1+2+3+...+2014)
b/ 1 x 2014+2x2013+3x2012+...+2014x1
(1-1/2)x(1-1/3)x(1-1/4)x(1-1/5)x...x(1-1/2003)x(1-1/2004)
Tính nhanh;
( 1- 1/2 ) x ( 1 - 1/3 ) x ( 1- 1/4 ) x ( 1 - 1/5 ) x......x ( 1 - 1 / 2003 ) x ( 1 - 1/ 2004 )
Tìm x
1 / 2 x X - 3 /4 = 5/6
Tính giá trị biểu thức
B = ( 1 - 1/2 ) x ( 1 - 1/3 ) x ( 1 - 1/4 ) x ( 1 - 1/5 )....( 1 - 1/2003 ) x ( 1 - 1/2004 )
1,
A=(1-1/2)x(1-1/3)x(1-1/4)x(1-1/5)...............(1-1/2003)x(1-1/2004)
tìm A.