Các câu hỏi tương tự
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.
Tim cac so tu nhien n de cac phan so sau la phan so toi gian:
a)2n+3/4n+1 b) 3n+2/7n+1 c)2n+7/5n+2
tim n de 7n+4/5n+3 la mot phan so toi gian
tim cac so tu nhien n khac 0 de cac phan so sau la phan so toi gian
7/n-3
n+7/n+2
2n+16/n+5
3n+4/n3
1 . cmr : n+1/n-2 toi gian
2 . cho A = n+10 / 2n-8 . tim cac so nguyen de A la phan so
cho phan so n-5/n+1 . tim so n de phan so tren la phan so toi gian
Tim so tu nhien n de phan so A=\(\frac{2n+1}{n-3}+\frac{3n-5}{n-3}-\frac{4n-5}{n-3}\)
a/Tim n de A nhan gia tri nguyen
b/Tim n de A la phan so toi gian
tim tat ca cac so tu nhien n de phan so n+3/n -12 la phan so toi gian
Tim so nguyen n de phan so 2n+3/7n+9 khong toi gian