Question

妍

求解🙏🏻

2.
(3a+b=13
G = = b = =g
已知一次函數f(x)滿足 (210)=3,f(212)=9,則/(21)= 65
21°a+b=3 (2½ 292=6 a=512
Rath=9
30729=h
/ 3.
已知二次函數 f(x)的圖形以x=-1為對稱軸目通過(0-2)及(3)天上
Bil
1024

Answer 1

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綾

一次函數就是線性函數
y = ax + b
3 = a(2^10) + b
9 = a(2^12) + b
6 = a(2^12 - 2^10)
6 = a(2^10)(2^2 - 1)
2 = a(2^10)
4 = a(2^11)
b = 3 - 2 = 1
f(2^11) = a(2^11) + b = 5

妍

懂了！謝謝你😊