a) -10<a<10
b) vô lý; /2/=2.... -có thể là /x/.....b) -10<x<15
c) dung voi moi x
d) vô nghiem vi moi x co /x/>=0
a) -10<a<10
b) vô lý; /2/=2.... -có thể là /x/.....b) -10<x<15
c) dung voi moi x
d) vô nghiem vi moi x co /x/>=0
Cho 3 diem A,B,C thang hang .Trong ba diem A,B,C diem nao nam giua hai diem con lai.Neu AC=2,CD=5,AB=3
Cac ban viet loi giai ro rang nha dung viet dap o luon thank you
Giup minh voi!
Tim x:
a) 1/5.8 + 1/8.11 + 1/11.14 +........+ 1/x(x+3) = 101/1540
b) 1 + 1/3 + 1/6+ 1/10+......+ 1/x(x+1):2 = hon so 1 1991/1993
Ai nhanh nhat dung nhat tick lun!(Nho ghi cach giai ro rang)
Tim 3 so nguyen co tong bang -4, biet rang so thu nhat nhan 2, so thu hai cong voi 3, so thu ba tru di 4 thi duoc cac ket qua bang nhau. Tim 3 so do?
AI LAM DAU TIEN, CO TRINH BAY, DAP AN DUNG, MINH SE TICK CHO 1O CAI
Cho a va b la 2 so nguyen to lien tiep lon hon 2. Chung minh rang : a+b tat ca tren 2 la hop so(Nho ghi cach giai ro rang )
Ai lam nhanh nhat,mk se tick cho!
tim so nguyen x , biet :
/3 - 2x / < 2
CO CACH LAM NUA NHA CAC BN , AI GIAI DUNG MK TICK
Tim x biet :
a, |2x+1|-x=5
b, |x-10|10+|x-11|10=1
Trinh bay cach lam ro rang cho minh nhe
Chieu phai nap roi
Ai trinh bay ro rang nhat minh se tick
a, Chung minh rang 5m+3 va 3m+2 la 2 so nguyen biet rang 1 so bang 10 ngen to cung nhau voi m la so nguyen to bat ky.
b,Tim 1 bo ba so nguyen to biet rang 1 so bang 10 phan tram tong cua 3 so can tim
Ai lam nhanh nhat minh tick cho
Giup minh voi!
1/2^2 + 1/4^2 + 1/6^2 +.....+ 1/210^2 (Nho ghi cach giai ro rang)
Ai nhanh nhat minh se tick cho nhung phai dung do! Thank truoc nha!
Tinh nhanh
1-2-3-4+5-6-7-8+9-10-11-12+...+97-98-99-100 ban nao tra loi nhanh va co dap an loi giai thi minh tich nha