Mathematics
Senior High
Resolved
答案是1
我不懂我哪裡錯 我已經卡快十分鐘了
我用的是公式
☆講函数的「最大1小值」是在講「y」大小
已知二次函數y=ax²+2x+2a有最小值1,求實數a的值。
Lex:
4-8a2
2
4a
- Sa² - 4a + 4 =
2
-za-a+1=
-29 +1
a70
a +1
a=1x
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