\(A=\frac{12n+1}{2n+3}=\frac{12n+18-17}{2n+3}=\frac{6\left(2n+3\right)-17}{2n+3}=6-\frac{17}{2n+3}\)
Để \(6-\frac{17}{2n+3}\in Z\Leftrightarrow\frac{17}{2n+3}\in Z\)
=> 2n + 3 \(\in\) Ư( 17 ) = { - 17; - 1; 1 ; 17 }
=> n = { - 10 ; - 2 ; - 1 ; 7 }
cho A=2n-1/n+3.tinhs gia tri cua N de:A la mot phan so va A la mot so nguyen
cho A= 12n+1/2n+3 tim gia tri n de a la phan so
cho A= 12n 1/2n 3 tim gia tri n de a la phan so
bai 1
a, chung to rang 2n+5/n+3, ( n thuoc N ) la phan so toi gian
b, tim gia tri nguyen cua n de B= 2n+5/n+3 co gia tri la so nguyen
bai 2
tim so tu nhien nho nhat sao khi chia cho 3 du 1 cho 4 du 2 cho 5 du 3 cho 6 du 4 va chia het cho 11
cho bieu thuc 2n+1/n+5(n thuoc Z)
a, tim n de Pco gia tri la 1 so nguyen
b,tim gia tri lon nhat,gia tri nho nhat cua P
1) Cho bieu thuc : A= 2n +1 /n-3 + 3n-5/ n-3 - 4n-5 /n-3
a)Tim so nguyen n de A nhan gia tri nguyen
b) Tim n de A la phan so toi gian
Cho phan so A = 2n-1/n+3
Tim so nguyen n de A co gia tri la 1 so nguyen
pls, lam nhanh cho minh,mai di hoc :(. Thanks truoc
cho bieu thuc :A=2n+1/n-3+3n-5/n-3-4n-5/n-3.a, tim n de a nhan gia tri nguyen .b,tim n de a la phan so toi gian
Cho A=n+3/n+2 voi n€z
a)tim dieu kien cua so nguyen n de A la phan so
b)tinh gia tri cua phan so A khi n=1;n=-1
c)tim so nguyen n de phan so A co gia tri la so nguyen
