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=?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 03:53:10
1.设g(x)={e^x(x≤0)Inx(x>0),},则g(g(g(1/2)))=?2.已知lg3=0.4771,lgx=-3.5229,则x=?3.设log8(底数)9(真数)=a,log3(底数

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

设g(x)=e^x(x≤0) g(x)=lnx(x>0) ,则g(g(1/2))=? 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=? 设g(x)=e的x,x≤0 lnx,x>0 则g(g(1/2))等于? 已知f(x)=e^x-e^-x,g(x)=e^x+e^-x,设f(x)f(y)=4,g(x)(y)=8,求[g(x+y)]/[g(x-y)]的值 设g(x)={①e^x,x≤0 ②lnx,x>0 则关于x的不等式g(x)≤1的解集是()A.(-∞,1] B.(-∞,e] C.[o,e] D.[0,1] 设a>0,f(x)=x/x-a,g(x)=e^xf(x)(其中e是自然对数的底数) 设函数g(x)的极大值为g(t),是否存在整数m,使g(t) 设分段函数g(x)=e^x,x0,则g(g(1/2))= 设g(x)={e^x(x≤0 lnx(x>0),则g[g(1/2)]=? 设X是随机变量,g(X)=(X-E(X))的平方,那么g(X)的数学期望 设函数f(x)=e^x-x-1,g(x)=e^2x-x-7.(1)解不等式f(x)≤g(x)(2)事实上,对于任意x属于R,有f(x)≥0成立,当且仅当x=0时取等号.由此结论证明:(1+1/x)^x<e,(x>0) 已知F(x)=eX—e-X,g(x)=eX+e-X,(e=2.71828) 设F(x)F(y)=4,g(x)g(y)=8,求g(x+y)除以g(x-y)? 设函数f(x)=e^x-ax-2其导函数为f‘(x)若a=1 k为整数且当x>0时 (x-k)f’(x)+x+1>0 求k的最大值1.当a=1,f(x)'=e^x-1(x-k)(e^x-1)+1+x>0设g(x)=(x-k)(e^x-1)+x+1(x>0)g(x)'=(x-k)e^x吗?2.(x-k)(e^x-1)>-1-xk>(-1-x)除 已知f(x)=e^x-e^-x,g(x)=e^x+e^-x(e=2.718……)(1)求【f(x)】^2-【g(x)】^2的值(2)设f(x)f(x)=4,g(x)g(x)=8,求g(x+y)/g(x-y)的值 设f(x)={x^sin(1/x),x>0 a+e^x,x 设g(x-1)=x^2+x+1.求g(x) g(x)= e^x (x≤0) lnx (x≥0) 求 g[g(x)] f(x)=e^x-e^-x,g(x)=e^x+e^-x,1、求[f(x)]^2-[g(x)]^2的值设f(x)f(y)=4,g(x)g(y)=8,求[g(x+y)]/[g(x-y)]的值 1.若函数f(x)=-x四次方-8x三次方-14x²+8x+15,则f(x)最大值是2.设函数f(x)=e的x次方+x-2 g(x)=lnx+x²-3 若实数a,b满足f(a)=0 g(b)=0 则 A g(a)