20162016韓劇推薦|討論2016韓劇推薦推薦好看的韓劇推薦與韓劇推薦2016韓劇排行榜前十名 , 好看的韓劇推薦 , 2016韓劇收視率

設f(x)=3x-7若g(x-1)=f(x+2)則g(-2)=?

A:

g(x-1)=g(-2), x=(-1) 帶回去,
=>f(x+2)=f(1). 帶回去,
=>f(x)=3x-7
=>f(1)=(-4)

Ans:(-4)

設f(x+3)=f(x)-3且f(3)=9,則f(12)=?

A:

依f(x)=ax+b, 得到:
a(x+3)+b=ax+b-3
=> a=(-1)
再由:f(3)=9 得到:
f(3)=3a+b=9
=>a代(-1) 得到b=12
=> 得到方程式: f(x)=(-1)x+12
則便可知道9f(12)=0*9=0

Ans:0

若 f(x)=-4x+9則f(x+3)=?

A:

f(x)=ax+b, f(x+c)=a(x+c)+b
就可知道題目之解:
f(x+3)=(-4)(x+3)+9=(-4)x-3

Ans:(-4)x-3

參考資料： Me, 國中生的見解.

This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers. Five Filters recommends: 'You Say What You Like, Because They Like What You Say' - http://www.medialens.org/index.php/alerts/alert-archive/alerts-2013/731-you-say-what-you-like-because-they-like-what-you-say.html