Các câu hỏi tương tự
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!!!!
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 a/b la phan so toi gian CMR (a-2b)/b cung la phan so toi gian
Cho a/b la phan so toi gian
C/m a+b/b,b-a/b cung la phan so toi gian
cho a,b thuc N*,a/b la phan so toi gian.chung to a/a+b la phan so toi gian
CMR: Neu phan so 7n^2+1/6 la so tu nhien voi n thuoc N thi cac phan so n/2 va n/3 la cac phan so toi gian
tim stn n de phan so A = 8n + 193 phan 4n+3 sao cho
a) co gia tri stn
b) la phan so toi gian
c) voi gia tri nao cua n trong khoang 150 den 170 thi phan so A rut gon duoc
cho biểu thức A= a^3 +2a^2-1/a^3 +2a^2+2a+1
a, rut gon bieu thuc
b, CMR neu A la so nguyen thi gia tri cua bieu thuc tim duoc cua cau a la 1 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.