Tim n thuoc N de:

A= 6n-3/4n-6 co GTLN

Trinh bay cach lam nua nha

Trong doi vao cac ban rat nhieu

Thanks

Tim x,biet:

(13.3^x-2-3^x):2=162 (Voi x ≥2)

Trinh bay cach lam ho minh voi nhe

Bai 1:

a) Cho A = 963 + 351 + x voi x thuoc N . Tim dieu kien cua x de A chia het cho 9 , de A khong chia hat cho 9

b) Cho B = 10 + 25 + x + 45 voi x thuoc N . Tim dieu kien cua x De B chia het cho 5 , B khong chia het cho 5

Bai 2 : Tim x thuoc N biet :

a) 1 + 2 + 3 + ..... + n = 325

b) 1 + 3 + 5 +... + ( 2n+1) = 144

c) 2 + 4 + 6 + ... + 2n = 756

a. tim cach xac dinh gan dung ap suat cua nguoi dung bang hai chan tac dung len mat dat bang cac dung cu don gian de kiem

b xac dinh van toc cua dong nuoc khi chay ra khoi voi may nuoc cho cac dung cu coc dong thuoc do dong ho bam giay

Cho A =n-2 / n+5

a,Tinh gia tri cua B=(n+5)²⁰¹⁶+2015 khi A dat gia tri nho nhat

cac ban trinh bay cach lam ho minh nhe

thanks

Cho A =n-2 / n+5

a,Tinh gia tri cua B=(n+5)²⁰¹⁶+2015 khi A dat gia tri nho nhat

cac ban trinh bay cach lam ho minh nhe

thanks

cach lam bai : giup minh voi

tim x thuoc Z biet:

a, /x/+/y/=0

b, /x/ + /y/= 1

cho phan so :\(\frac{6n-4}{2n+3}\)n thuoc z 

a, tim n de A dat gia tri la so nguyen 

b,tim n de A dat gia tri lon nhat va tinh gia tri do.

giup mk nhe mn:))

Tim cac so nguyen x , y , z biet:

|x.y-10|+|y.z+15|+|zx+6|≤0

Trinh bay cach lam ho minh voi nhe