推 jacky7987 :Consider g(x)=f(x)-x, then g(1)=1, g(2)=-1 04/25 22:44
→ jacky7987 :then by IVT, there exists a c such that g(c)=0\ 04/25 22:45
→ jacky7987 :c in (1,2) 04/25 22:45
→ jacky7987 :This means f(c)=c, i.e. f intersect with y=x 04/25 22:46
→ pop10353 :看懂了！！！感謝!! 04/25 22:55
推 THEJOY :推1F高微神手 04/25 22:57
推 t0444564 :勘跟定理解之? 04/25 23:04
推 LPH66 :勘根跟 IVT 是同一回事... 04/25 23:15
推 jacky7987 :其實這是微積分習題== 04/26 00:16
→ jacky7987 :我的高微也是THEJOY大教的喔>.^ 04/26 00:17