so sanh A va B
A= (2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)
B=2^32
so sanh hai so E =(3^n+1)+4*(2^n-1)-81*(3^n-3)-8*(2^n-2)+1 va F=(2^n+1)^2+(2^n-1)^-2*((4^n)+1)(n nguyen duong)
so sanh a va b trong truong hop sau:
5a+2<5b-1
so sanh bang cach van dunghang dang thuc A=2 \(^{16}\)va B=(2+1)(2\(^2\)+1)(2\(^4\)+1)(2\(^8\)+1)
so sanh \(A=3.\left(2^2+1\right).\left(2^4+1\right).\left(2^8+1\right).\left(2^{16}+1\right).\left(2^{32}+1\right)\)
va \(B=2^{64}\)
Cho A x 44,8 x 43,1 x 41, 4 x 39 ,7 ... x 31,2 x 29 ,5 Tính giá trị của A khi x 43 ,1.
Cho tam giac abc,trung tuyen am.Goi i la trung diem am,d la giao diem cua bi va ac
a,cm ad bang 1 phan 2 dc
b,so sanh do dai bd va id
B1. Cho f(1)=1008,f(1)+f(2)+...+f(n)=n^2.f(n) f(n)la ham so duong
tinh f(2015)
B2 Cho cac so nguyen to q,p,r,s sao cho cac so sau deu la so nguyen to p^s+s^q,q^s+s^r,r^s+s^p
tim cac so p,q,r,s
B3 co a,b,c duong a mu 3+bmu3=c^3
so sanh a^2015+b^2015 va c^2015
so sanh
C=3^16-1
D=(3+1)x(3^2+1)x(3^4+1)x(3^8+1)
