已知F(x)=ax7-bx5+2,且f(-5)=m,则f(5)+f(-5)的值为
1个回答
4
G(x)=ax7-bx5=(7a-5b)x
F(x)=G(x)+2
f(5)+f(-5)=G(5)+G(-5)+4=(7a-5b)(-5+5)+4=4
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