已知定义域为R的奇函数F(X)满足F(X+2)=-F(X)当x属于【0,1】时 F(X)=2^x-1 求F(log(1/2)24)
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F(log(1/2)24)
=F(-log2(24))
奇函数
=-F[log2(24)]
=-F[log2(6×4)]
=-F[log2(6)+log2(4)]
=-F[log2(6)+2]
=-{-F[log2(6)]}
=F[log2(1.5×4)]
=F[log2(1.5)+log2(4)]
=F[log2(1.5)+2]
=-F[log2(1.5)]
1<1.5<2
所以0<log2(1.5)<1
所以-F[log2(1.5)]
=-2^[log2(1.5)]-1
=-1.5-1
=-2.5
=F(-log2(24))
奇函数
=-F[log2(24)]
=-F[log2(6×4)]
=-F[log2(6)+log2(4)]
=-F[log2(6)+2]
=-{-F[log2(6)]}
=F[log2(1.5×4)]
=F[log2(1.5)+log2(4)]
=F[log2(1.5)+2]
=-F[log2(1.5)]
1<1.5<2
所以0<log2(1.5)<1
所以-F[log2(1.5)]
=-2^[log2(1.5)]-1
=-1.5-1
=-2.5
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