tinh gia tri bieu thuc :B=1.2+2.3+3.4+...+2010.2011
Tinh gia tri cac bieu thuc sau
a) A = \(\frac{1}{1.2}+\frac{1}{2.3}+\frac{1}{3.4}+...+\frac{1}{49.50}\)
tinh gia tri bieu thuc :M=1.2+2.3+3.4+..+99.100
Tim so nguyen x thuoc Z: (x^2-1)(x^2-4)<0
gia tri cua bieu thuc M = 1.2+2.3+3.4+.....+212.213
GIUP MIK NHA
AI GIAI DC VA NHANH NHAT MIK SE TIK CHO
Tinh gia tri bieu thuc A = 5/1.2 + 5/2.3 +...+ 5/99.100
Tim so tan cung cua bieu thuc 1.2+2.3+3.4+....+1001.1002
CHO bieu thuc
B=17,58*43+57*17,58/293*A
a)tim gia tri cua bieu thuc Bkhi a=2
b)tinh gia tri a khi B=2
c)tim gia tri so tu nhien ad biet bieu thuc B co gia tri lon nhat ,gia tri lon do la bao nhieu
cho bieu thuc: A=1/1.2+1/2.3+1/3.4+...+1/99.100
a: CMR: 1/n.(n+1) = 1/n-(1/n+1)
b: tinh A
1. tinh gia tri cua bieu thuc
B = 13a + 19b +4a - 2b voi a + b = 100
