1.设g(x)={e^x(x≤0) In x(x>0),},则g(g(g(1/2)))=?2.已知lg3=0.4771,lg x= -3.5229,则x=?3.设log8(底数)9(真数)=a,log3(底数)5(真数),则lg2=?
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1.设g(x)={e^x(x≤0) In x(x>0),},则g(g(g(1/2)))=?2.已知lg3=0.4771,lg x= -3.5229,则x=?3.设log8(底数)9(真数)=a,log3(底数)5(真数),则lg2=?
1.设g(x)={e^x(x≤0) In x(x>0),},则g(g(g(1/2)))=?
2.已知lg3=0.4771,lg x= -3.5229,则x=?
3.设log8(底数)9(真数)=a,log3(底数)5(真数),则lg2=?
1.设g(x)={e^x(x≤0) In x(x>0),},则g(g(g(1/2)))=?2.已知lg3=0.4771,lg x= -3.5229,则x=?3.设log8(底数)9(真数)=a,log3(底数)5(真数),则lg2=?
1.有里向外层层推进
g(1/2)=In1/2
http://zhidao.baidu.com/question/72034430.html
1.g(g(g(1/2)))= g(g(ln1/2)
=g(e^ln1/2)=g(1/2)=ln1/2
2.lg3=0.4771,-lg x= 3.5229
lg3-lg x=0.4771+3.5229=4
lg3/x=4
3/x=10^4
x=3/10^4=0.0003
3.有问题?
1,ln0.5
2,x=0.0003
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1.设g(x)={e^x(x≤0) In x(x>0),},则g(g(g(1/2)))=?2.已知lg3=0.4771,lg x= -3.5229,则x=?3.设log8(底数)9(真数)=a,log3(底数)5(真数),则lg2=?
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