\(A=\frac{1}{1.300}+\frac{1}{2.301}+\frac{1}{3.302}+...+\frac{1}{101.400}\)
\(A=\frac{1}{299}\cdot\left(1-\frac{1}{300}+\frac{1}{2}-\frac{1}{301}+\frac{1}{3}-\frac{1}{302}+....+\frac{1}{101}-\frac{1}{400}\right)\)
\(A=\frac{1}{299}\cdot\left(1-\frac{1}{400}\right)\)
\(A=\frac{1}{299}\cdot\frac{399}{400}=\frac{399}{119600}\)
tính A,biết;A=1/1.300+1/2.301+1/3.302+...+1/101.400 làm nhanh nhé đng vội
Tính A/B :
A= 1/1.300+1/2.301+1/3.302+...+1/101.400
B= 1/1.102+1/2.103+1/3.104+...+1/299.400
Tính A/B biết :
A = 1/1.300 + 1/2.301 + 1/3.302 + ... + 1/101.400
B = 1/1.102 + 1/2.103 + 1/3.104 + ...+ 1/299.400
Tính \(A=\frac{1}{1.300}+\frac{1}{2.301}+\frac{1}{3.302}+...+\frac{1}{101.400}\)
Tính:
A=1.5.6+2.10.12+4.20.24+9.45.54 / 1.3.5+2.6.10+4.12.20+9.27.45
B=1/1.300 +1/2.301 +1/3.302 +...+1/101.400 / 1/1.102 +1/2.103 +1/3.104 +...+1/299.400
GIUPS MK VS,MAI MK PHẢI NỘP RỒI!!!!
Tính tổng sau:
a) A=1/1.300+1/2.301+1/3.302+...+1/101.400
B=1/1.102+1/.103+1/3.104+...+1/299.400
b)Tính tỉ số A/B
Tính: \(\frac{\frac{1}{1.300}+\frac{1}{2.301}+\frac{1}{3.302}+...+\frac{1}{101.400}}{\frac{1}{1.102}+\frac{1}{2.103}+\frac{1}{3.104}+...+\frac{1}{299.400}}\)
Tính:
A=\(\frac{\frac{1}{1.300}+\frac{1}{2.301}+\frac{1}{3.302}+...+\frac{1}{101.400}}{\frac{1}{1.102}+\frac{1}{2.103}+\frac{1}{3.104}+...+\frac{1}{299.400}}\)
Giúp mình nha các bạn
tính A/B trong trường hợp sau:
a)A=1/1.300+1/2.301+1/3.302+...+1/101.400
B=1/1.102+1/2.103+1/3.104+...+1/299.400
b)A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+...+198/2+199/1
