S = 1002+2002+3002+...+10002
= 12.1002+22.1002+32.1002+...+102.1002
=1002.(12+22+32+...+102)
=1002.385
=10000.385
=3850000
S = 1002+2002+3002+...+10002
= 12.1002+22.1002+32.1002+...+102.1002
=1002.(12+22+32+...+102)
=1002.385
=10000.385
=3850000
tinh tong S = 1"2 + 2"2 + 3"2 + ..... +100"2 (co cach giai )
1.tim 2 so tu nhien co hieu bang 2002 va tich bang 2006.
2.cho 100 so tu nhien 1,2,3,4,....100.
co the chon duoc 71 so tu nhien sao cho tong cua chung bang tong cua 29 so con lai khong
3.mot so chan co 4 chu so , trong do so tao boi chu so hang tram va hang chuc gap 3 lan chu so hang nghin va gap 2 lan chu so hang don vi .
[CAC BAN GHI LOI GIAI GIUP MINH NHE MINH CAM ON]
Bai 1:Tinh tong T=1-2+2^2-2^3+....+2^1000
Bài 2:Tinh gia tri nho nhát A=|x+10|+2015
Bài 3:Tim gia tri lon nhát cua biểu thức: |-x+4|+2011
Giúp minh giai may bai nay voi
Cac ban oi , Giap Minh tra loi cua nay nhe . Tinh S=1-3+3^2-3^3+...+3^99-3^100
tính tổng S = 1*2+2*3+3*4+...+99*100
CO DANG TONG QUAT LA SAO?
BAN NAO BIET THI GIUP NHE MINH DANG CAN GAP!
S= 2+2^2+2^3+.....+2^2018
tinh tong , giai chi tiet
ai giai truoc minh tick cho nhe
1.tinh
C=(1+1/1.3)(1+1/2.4)(1+1/3.5)...(1+1/2014.2016)
2.tim x
a,5^x=125
b,3^2.x=81
c,5^2.x-3-2=10
d,(5^x-1).3-2=10
3.tim n de n^2+2016 la 1 so chinh phuong
Giai nhanh giup minh nhung phai co phep tinh ,loi giai duong hoang nhe!!!!!
giai luon giup minh ca loi giai
B=100^2+200^2+.....+1000^2=?_
tim x
x+2.x+3+...+100x=151500
2
1: tim 2 so tu nhien bit tong = 432 va ƯCLN cua chung = hieu cua chung = 36
2: co 1 so cuon sach . neu xep thanh tung chong 10 vua het thanh chong 12 thi thua 2 cuon thanh chong 18 cuon thi thua 8 cuon bit rang so sach trong khoang 715 den 1000 cuon . tinh so sach
AI LAM NHANH VA GIAI THICH RO THI DUOC 8 TICK
CO LEN NHE HIHI