Các câu hỏi tương tự
Giup to bai nay voi : Chung minh voi n thuoc N sao phan so sau la phan so toi gian 4n+1/6n+1
chung to phan so toi gian voi n thuoc n a , n+1/2n+3 b, 2n +3 /4n +8
Chung minh rang phan so sau toi gian voi moi n thuoc N 2n+1/2n(n+1)
Chung to rang phan so sau toi gian voi mọi n thuộc N
2n+1/2n(n+1)
Tim n de phan so sau toi gian voi n thuoc N 2n+3/4n+1
Chung to rang phan so sau toi gian voi moi n thuộc N
2n+1/2n(n+1)
Lam on do ai lam dc minh cho 6 tich
cach lam bai : chung to rang moi phan so co dang n+2015/n+2016 ( voi n thuoc N ) deu la phan so toi gian
cho A = 3N+2/6N+3
A TIM N DE a LA PHAN SO
b chung to A la phan so toi gian voi moi n thuoc N
Chung minh rang moi phan so dang n+1/2n+3 ( n thuoc N ) deu la phan so toi gian.