10lg(1+2k²)=15,求K值,拜谢!
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10lg(1+2k²)=15,求K值,拜谢!
10lg(1+2k²)=15,求K值,拜谢!
10lg(1+2k²)=15,求K值,拜谢!
10lg(1+2k²)=15
lg(1+2k²)=1.5
1+2k²=10^1.5
1+2k²=31.6
k=±3.91