\(S=\dfrac{1}{1.2}+\dfrac{1}{2.3}+\dfrac{1}{3.4}+\dfrac{1}{4.5}+...+\dfrac{1}{49.50}\)
\(S=1-\dfrac{1}{2}+\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{4}+...+\dfrac{1}{49}-\dfrac{1}{50}\)
\(S=1-\dfrac{1}{50}\)
\(S=\dfrac{49}{50}\)
Tính S/P biết:
S = 1/2 + 1/3 + 1/4 + 1/5 + ... + 1/49 + 1/50
P = 1/49 + 2/48 + 3/47 + ... + 48/2 +49/1
cho S = 1/2+1/3+1/4+...+1/49+1/50 và P = 1/49 +2/48+3/47+...+48/2+49/1.
tính S/P
Cho S =1/2 +1/3 + 1/4+...+1/48+1/49+1/50
Và P = 1/49 + 2/48 + 3/47+...+ 48/2 + 49/1
Tính S / P
Cho S=1/2+1/3+1/4+.....+1/49+1/50 ,
P=1/49+2/48+3/47+.....+49/1.
Tính S/P
Giúp mình với
S=1/2+1/3+1/4+....+1/49+1/50,P=1/49+2/48+3/47+....+48/2+49/1,hay tim S/P
Bài 2:
a) Cho S = ½ + 1/3 + ¼ + ............ + 1/50
P = 1/49 + 2/48 + 2/47 + ............. + 49/1
Tính S và P
Cho S = \(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{48}+\frac{1}{49}+\frac{1}{50}\)và P = \(\frac{1}{49}+\frac{2}{48}+\frac{3}{47}+...+\frac{48}{2}+\frac{49}{1}\). Tính \(\frac{S}{P}\)
cho p=1/2+1/3+1/4+…+1/47+1/48+1/49+1/50
q=1/49+2/48+3/49+…47/3+48/2+49/1
tính p/q
Cho biểu thức :
S=1/2+1/3+1/4+...+1/49+1/50
P=1/49+2/48+3/47+...+48?2+49/1
Hãy tối giãn phân số S/P
