Các câu hỏi tương tự
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
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
AI GIOI TOAN GIUP NHA!!!
cho 2^m -1 la so nguyen to chung minh rang m la so nguyen to
ai tra loi dung va som nhat minh thich cho ^_^
giai ho minh bai nay voi
cho a,b,c la do dai 3 canh tam giac va an;bn;cn cung la do dai 3 canh tam giac voi n la so nguyen duong. Chung minh rang 2 trong 3 so a,b,c bang nhau
Cho p la so nguyen to biet 8p+1 la so nguyen to .Chung to rang 4p+1 la hop so
nguyen to a co so hieu nguyen tu la 11 , chu ki 3,nhom I trong bang tuan hoan cac nguyen to hoa hoc.hay cho biet:
-cau tao nguyen tu cua A.
-tinh chat hoa hoc dac trung cua a
-so sanh tinh chat hoa hoc cua a voi nguyen to lan can
tim so nguyen to p de 2^p +p^2 la so nguyen to
cho bieu thuc p=3can2n-5can8n+7can18n+28 voi n la so tu nhien tim tat ca so tu nhien n sao cho <10 va p la so nguyen
cho n la so nguyen duong va d la mot uoc nguyen duong cua 2n\(^2\) chung minh n\(^2\)+d khog phai la so chinh phuong?