So sanh cac phan so sau:
A=\(\frac{3^{10}+1}{3^9+1}\)va B=\(\frac{3^9+1}{3^8+1}\)
so sanh
A=1+5+5^2+....++5^9 / 1+5+5^2+...+3^8 va B=1+3+3^2+...+3^9 / 1+3+3^2+...+3^8
so sanh A va B biet A=1+5+5^2+5^3+...+5^9/1+5+5^2+5^3+...+5^8 va B=1+3+3^2+3^3+...+3^9/1+3+3^2+3^3+...+3^8
So sanh A va B
A = 1 + 1/2 + 1/3 + 1/4 + 1/5 + 1/6 + 1/7 +1/8 + 1/9 +1/10
B = 23/10
Tính giúp em với ạ
cho A:1+5+5^2+.....+5^9/1+5+5^2+.........+5^8
B:1+3+3^2+.....+3^9/1+3+3^2+.....3^8
so sanh A va B
So sanh A va B, biet :
a)\(A=\frac{1+5+5^2+...+5^9}{1+5+5^2+...+5^8};B=\frac{1+3+3^2+...+3^9}{1+3+3^2+...+3^8}\)
b)\(A=\frac{7^{10}}{1+7+7^2+...+7^9};B=\frac{5^{10}}{1+5+5^2+...+5^9}\)
So sanh A va B.
so sanh: A= \(\frac{3^{10}+1}{3^9+1}\) voi B=\(\frac{3^9+1}{3^8+1}\)
so sanh :A= 9^202-3 /9^201 va B=9^201+1/9^200+1