Các câu hỏi tương tự
CMR phan so 3n+2/5n+3 toi gian voi moi n thuoc N
Cho n thuoc N, chung to cac phan so sau la toi gian :
a, 2n+1/5n+2
b, 5n+2/3n+1
c, 5n+2/(3n+1).(2n+1)
Chung minh rang neu n thuoc N cac phan so toi gian
7n+10/5n+7
Cho phan so: P = \(\frac{2n+7}{5n+2}\)(n thuoc Z)
a)Tim n thuoc z de P la phan so chua toi gian.
b)Tim n thuoc Z sao cho P la phan so toi gian.
cho phan so p=6n+5/3n+2 (n thuoc N)
chung minh rang phan so p la phan so toi gian
giup minh nhe
Chung minh rang moi phan so dang n+1/2n+3 ( n thuoc N ) deu la phan so toi gian.
chung minh rang : Voi moi n thi phan so 7n+4/5n+3 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: Voi moi n thi phan so 7n+4/5n+3la phan so toi gian