Consider f (2x ) =4x^2-6x+7 .
a ) Find f (0 ) and f ( 6 )
b ) Find f (a )
F4 Math一問~~~~~
2007-09-30 10:43 pm
回答 (2)
2007-09-30 11:41 pm
✔ 最佳答案
f (2x ) =4x^2-6x+7 . a ) Find f (0 ) and f ( 6 )
when 2x=0
x=0
put x=0
f[2(0)]=4(0)^2-6(0)+7
f(0)=7
when 2x=6
x=3
f[2(3)]=4(3)^2-6(3)+7
f(6)=4(9)-18+7
f(6)=36-18+7
f(6)=25
b ) Find f (a )
when 2x=a
x=a/2
f[2(a/2)]=4(a/2)^2-6(a/2)+7
f(a)=4(a^2/4)-3a+7
f(a)=a^2-3a+7
收錄日期: 2021-04-13 19:22:37
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