急 ! F4 about Polynomials

2011-11-04 5:49 pm
請詳細教我計以一下條.


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回答 (1)

2011-11-04 8:56 pm
✔ 最佳答案
30
(a) f(2)=8+10-3=15
(b)(i)
g(x)=f(x)+c
g(2)=f(2)+c=15+c
(b)(ii)
Set c=4
g(x)=x^3+5x+1
g(2)=15+4=19
(c)(i)
h(x)=k(x^3+5x-3)
h(2)=k(8+10-3)=15k
(c)(ii)
Set k=3
h(x)=3(x^3+5x-3)=3x^2+15x-9
h(2)=15k=45




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