x=ln(y^2-2x 1)定义域
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x小于0时,求f(X)=f(-x)=ln(x²+2x+2)x大于等于0时,f(x)=ln(x²-2x+2)f'(x)=(2x-2)/(x²-2x+2)函数y=f(x),f
y'=[1/(1+x^2)]*(1+x^2)'=[1/(1+x^2)]*2x=2x/(1+x^2)
chainruley=f(g(x))y'=g'(x)f'(g(x))
复合函数f(x)=lnxg(x)=ln[ln(x)]r(x)=ln{lnln(x)]}r'(x)=[1/lnln(x)]g'(x)=[1/lnln(x)][1/ln(x)]f'(x)=[1/lnln(
1/x再问:求写一下过程拍照再答:再问:不是是ln二次方x再答:再答:懂了么再答:再问:懂了再答:别忘了采纳最佳答案
Y=[LN(1-X)]^2?Y'=2LN|1-X|/(1-X)(-1)=-2LN|1-X|/(1-X)
由y=ln(2-x)定义域:2-x>0,∴x<2,值域:y∈R.
y=ln(x^2+2)是复合函数所以y'=[ln(x^2+2)]'[x^2+2]'=[1/(x^2+2)][2x]=2x/(x^2+2)
y=ln(1-x^2)y'=(1-x^2)'/(1-x^2)=-2x/(1-x^2)
y'=1/(tan(x/2))*(tan(x/2))'=1/(tan(x/2))*(sec^2(x/2))*(x/2)'=1/(2sin(x/2)*cos(x/2))=1/sin(x)=csc(x)
y=2^|x|所以y=2^(-x)(x<0)=2^x(x≥0)因为值域是[1,2]那么[a,b]的长度最大时是[-1,1],此时长度是2长度最小时是[-1,0]或[0,1],此时长度是1所以区间[a,
z=ln[x+a^(-y^2)],以下'表示对y求偏导,z'=[a^(-y^2)]'/[x+a^(-y^2)]=(-y^2)'a^(-y^2)lna/[x+a^(-y^2)],z'=-2ya^(-y^
1、y=x-ln(1+x)的定义域是:(-1,正无穷)y对x求导,令导数=0:dy/dx=1-1/(1+x)=0x=0当-1=0.那么,当X>0时,y=x-ln(1+x)>0所以,x>ln(1+x)
2x/(1+x^2)
1.f’(x)=2x+a/(1+x)=0,2x^2+2x+a=0有不等的实根,4-8a>0,a
如果是求导数的话,y'=(2x+e^x)/(x^2+e^x)
y'=ln(2x^-1)'=(x/2)*2*(-1)/x^2=-1/x
复合函数求导,应用链式法则y'=dy/dx=[dy/d(x^2+sinx)]*[d(x^2+sinx)/dx]=[1/(x^2+sinx)]*(2x+cosx)故y'=(2x+cosx)/(x^2+s
x≤0时√x^2=-x所以y=0x>0时√x^2=x所以y=ln(2x+1)