A=101+100+99+98+....+3+2+1/101-100+99-98+...+3-2+1
B=423134.846267-423133/423133.846267+423134
Tính
a, \(\frac{101+100+....+2+1}{101-100+99-98+...+3-2+1}\)
b, \(\frac{423134.846267-423133}{423133.846267+423134}\)
Tính
a, A=\(\frac{101-100+99-98+...+3-2+1}{101+100+99+98+...+3+2+1}\)
b, B=\(\frac{423133.846267+423134}{423134.846267-423133}\)
Tính:
a) A = \(\frac{101+100+99+98+...+3+2+1}{101-100+99-98+...+3-2+1}\)
b) B = \(\frac{423134.546267-423133}{423133.846267+423134}\)
tinh nhanh
a) A= 33(1-2/3)(1-2/5)...(1-2/99)
b) B=101+100+99+98+...+3+2+1/101-100+99-98+...+3-2+1
c) C=423134x846267-423133/423133x846267+423134
Bạn giỏi bạn làm đi đã ngu zồi thích tỏ ra minh ngu hơn. Bạn sợ bạn nếu ko nói câu đấy người ta tưởng bạn khôn chắc
a) A\(\frac{101+100+99+98+.....+3+2+1}{101-100+99-98+.....+3-2+1}\)
b) B=\(\frac{423134\cdot846267-423133}{423134\cdot846267-423134}\)
ai nhanh mình tích cho
Thực hiện phép tính
a) A= 33(1-2/3)(1-2/5)...(1-2/99)
b) B=101+100+99+98+...+3+2+1 / 101-100+99-98+...+3-2+1
c) C=423134x846267-423133 / 423133x846267+423134
Tính
a)A=101+100+99+98+…+3+2+
101-100+99+98+…+3-2+1
b)B=3737.43-4343.37
2+4+6+…+100
tính
a. A= 101+100+99+98+....+3+2+1/101-100+99-98+...+3-2+1
A=101+100+99+98+...+3+2+1/101-100+99-98+...+3-2+1
Lời giải:
Xét tử số:
$101+100+99+98+...+3+2+1=(101+1).101:2=5151$
Xét mẫu số:
$101-100+99-98+...+3-2+1$
$=(101-100)+(99-98)+...+(3-2)+1=\underbrace{1+1+....+1}_{50} +1=1.50+1=51$
Vậy $A=\frac{5151}{51}=101$
A=101+100+99+98+...+3+2+1/101-100+99-98+...+3-2+1
B=3737.43/4343.37
\(A=\dfrac{101+100+99+98+...+3+2+1}{101-100+99-98+...+3-2+1}\\ A=\dfrac{\left[\left(101-1\right):1+1\right]\times\left(101+1\right):2}{1+1+...+1+1}\\ A=\dfrac{5151}{51}=101\\ B=\dfrac{3737.43}{4343.37}\\ B=\dfrac{37.101.43}{43.101.37}\\ B=1\)