Cho a/b la phan so toi gian CMR (a-2b)/b cung la phan so toi gian
CMR : Neu a/b la phan so toi gian thi phan so a/a+b cung la phan so toi gian (b va a+b khac 0).
Cho phan so a/b la phan so toi gian. Hoi a/a+b co phai la phan so toi gian ko
giúp mình với!!!!
cho a,b thuc N*,a/b la phan so toi gian.chung to a/a+b la phan so toi gian
neu a/b la phan so toi gian thi a/a+b co phai la phan so toi gian
cho a va b la hai so nguyen to cung nhau chung minh rang a^2+b^2/a.b la phan so toi gian
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 phan so toi gian a/b nho nhat khac 0 sao cho khi chia a/b cho phan so 8/15,18/35 deu duoc ket qua la cac so nguyen
CM : a-2b/b la phan so toi gian
