Forgot password?
 Register account
View 192|Reply 2

[几何] 已知三边关系,求三角形的面积

[Copy link]

413

Threads

905

Posts

110K

Credits

Credits
10989

Show all posts

lemondian Posted 2023-5-4 19:19 |Read mode
(1)$\triangle ABC$的三边$a,b,c$满足$a+2b+3c=1$,则$\triangle ABC$的面积是否有最大值?若有,如何求得?
(2)$\triangle ABC$的三边$a,b,c$满足$x a^n+yb^n+zc^n=m(x,y,z,m>0)$,则$\triangle ABC$的面积是否有最大值?若有,如何求得?

686

Threads

110K

Posts

910K

Credits

Credits
91229
QQ

Show all posts

kuing Posted 2023-5-4 20:31
(1)所以你之前这帖白问了:forum.php?mod=viewthread&tid=6869

(2)不太可能有简单结论,别想了。

3159

Threads

7941

Posts

610K

Credits

Credits
63770
QQ

Show all posts

hbghlyj Posted 2023-5-4 22:07

Mobile version|Discuz Math Forum

2025-5-31 10:48 GMT+8

Powered by Discuz!

× Quick Reply To Top Edit