Toán by Tran Dang Hai Yen (FPL TN) https://padlet.com/yentdhtk00093/7ia87829kkex5hhb Được tạo với một chút tư duy thông thái en-us 2021-11-05 01:40:29 UTC 2025-11-08 00:03:42 UTC hello@padlet.com Dấu Của Nhị Thức Bậc Nhất chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868870365 2021-11-05 01:43:59 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868870365 Dấu Của Tam Thức Bậc Hai cuongnhtk00103 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868871644 2021-11-05 01:44:33 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868871644 Biểu Thức Có Dạng chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868872965 f(x) = ax + b ( a≠ 0 )

 
]]> 2021-11-05 01:45:09 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868872965 Biểu Thức Có Dạng chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868875661 f(x) = ax^2 + bx + c ( a≠0)

 
]]> 2021-11-05 01:46:17 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868875661 Định Lí chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868897354 2021-11-05 01:55:40 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868897354 Định Lí chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868902443 2021-11-05 01:57:58 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868902443 Xét Dấu Thương , Tích Các Nhị Thức Bậc Nhất chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868926250 2021-11-05 02:08:40 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868926250 Ví dụ chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868929523 2021-11-05 02:10:09 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868929523 Ví dụ chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868930674 2021-11-05 02:10:34 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868930674 chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868936762 f(x) = 3x+4
Với x > -4/3 thì 3x+4 > 0 nên f(x) cùng dấu với a và ngược lại ]]> 2021-11-05 02:13:20 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868936762 Áp Dụng Giải Bất Phương Trình chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868951064 2021-11-05 02:19:33 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868951064 chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868959242 f(x)=x^2+3x+2
∆=3^2-4.2=1
==> ∆>0
f(x)=0
--->x^2+3x+2=0
f(x)<0 khi -2<x<-1
F(x)>0 khi x>-1
x< -2


]]> 2021-11-05 02:23:08 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868959242 Ví dụ f(x) = ( 2x-1 ) (-x+5) chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868980480 2021-11-05 02:32:25 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868980480 Áp Dụng Giải Bất Phương Trình chiphu107 https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868989216 2021-11-05 02:36:07 UTC https://padlet.com/yentdhtk00093/7ia87829kkex5hhb/wish/1868989216