find f(g(h))

2008-06-22 2:09 am

find f(g(h))

f(x) = x * x + 3
g(x) = 4 * x
h(y) = y - 2

只需要計算步驟............如何得出這個答案

Answer: (4x - 8)(4x - 8) + 3

回答 (3)

2008-06-22 3:27 am

✔ 最佳答案

h(y)=y-2
h(x)=x-2 [Dummy variable]
g(h)=g(x-2)=4(x-2)=4x-8
f(g(h))=f(4x-8)=(4x-8)(4x-8)+3

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2008-06-22 2:39 am

h(x) = x - 2
g(h(x)) = 4*(x-2)
f(g(h(x)) = 4*(x-2)*4*(x-2) + 3
=(4x-8)(4x-8)+3

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2008-06-22 2:16 am

g(x) = 4 * x= 4x

g[h(x)]= 4(x-2)= 4x-8

f{g[h(x)]}= (4x - 8)(4x - 8) + 3

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