y=tan(x pi 5),x≠3丌 10 k丌

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y=tan(x pi 5),x≠3丌 10 k丌
求函数y=tan(3x-π3

由3x-π3≠kπ+π2,k∈Z,得x≠kπ3+5π18,k∈Z.∴函数y=tan(3x-π3)的定义域为{x|x≠kπ3+5π18,k∈Z}.值域为:(-∞,+∞).由−π2+kπ<3x−π3<π2

找出dy/dx,tan(x y)=x+y

这是隐函数的求导.求隐函数y=tan(x+y)的导数dy/dx把y看做是x的函数,两边对x求导,得y'=[sec(x+y)^2]×(1+y')解上式,得y'=[sec(x+y)^2]/[1-sec(x

sin(y+x)+根号3cos(x-y)为偶函数,tan(y)=__________

因为是偶函数,所以,sin(y+x)+根号3cos(x-y)=sin(y-x)+根号3cos(-x-y)所以,可以展开:sinycosx+cosysinx+根号3cosxcosy+根号3sinxsin

tan(x+y)=2tanx(x,x+y≠kπ+π/2,k∈Z),证3siny=sin(2x+y)

记a=x+y,b=xtan(x+y)=2tanxsina/cosa=2sinb/cosb2sinbcosa=sinacosb3siny-sin(2x+y)=3sin(a-b)-sin(a+b)=2si

sin(x+y)=1\2,sin(x—y)=1\3,求[tan(x+y)-tanx-tany]\[tany的平方tan(

sin(x+y)=sinxcosy+cosxsiny=1/2sin(x-y)=sinxconsy-cosxsiny=1/3sinxcosy=5/12,cosxsiny=1/12tanx/tany=si

设y=In(sec X+tan X ),求y'

=(secX+tanX)'/(secX+tanX)=(secxtanx+sec²x)/(secX+tanX)=secx(tanx+secx)/(secX+tanX)=secx

函数的y=tan(2x-3)周期为

tanx函数的周期是π,所以y=tan(2x-3)的周期等于π除以2=π/2

函数y=tan(x-π6

∵函数y=tan(x-π6),∴x-π6≠kπ+π2,k∈z,求得 x≠kπ+2π3,k∈z,故函数的定义域为{x|x≠kπ+2π3,k∈z},故答案为:{x|x≠kπ+2π3,k∈z}.

求函数y=tan(2x-π3

∵y=tan(2x-π3),∴其周期T=π2.

3sinX=sin(2X+Y) 求证:tan(X+Y)=2tanX

你看后面TAN里一个x一个x+y那你就把给你的原式中的2x+y拆开,在消消化化的,试下吧我觉得能行

求导 y=ln(tan(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)

已知:3sinY=sin(2X+Y),求证tan(X+Y)=2tanX

令a=x+y,则条件变为3sin(a-x)=sin(a+x),展开得3sinacosx-3cosasinx=sinacosx+cosasinx,移项2sinacosx=4cosasinxtana=2t

y=tan(4-3x)函数的导数

y'=sec²(4-3x)*(4-3x)'=sec²(4-3x)*(-3)=-3sec²(4-3x)*

已知sin(x+y)=1,求证:tan(2x+3y)=tany

已知sin(x+y)=1,求证:tan(2x+3y)=tany证明:sin(x+y)=1所以x+y=2k兀+兀/2K为整数所以tan(2x+3y)=tan(4k兀+兀+y)=tan(兀+y)=tany

y=3tan(2x-π/4)

周期为pai/2定义域为集合2X-pai/4不等于kpai+pai/2k属于整数单调递增区间为kpai-pai/2

已知5siny=sin(2x+y),求证:tan(x+y)=3/2tanx

sin[(x+y)+x]=5sin[(x+y)-x]sin(x+y)·cosx+cos(x+y)·sinx=5·sin(x+y)·cosx-5·cos(x+y)·sinx4·sin(x+y)·cosx

求导数 y=ln tan x

因为:正切函数y=(tanx)y'=1/(cosx)^2对数函数y=lnxy'=1/x所以:y=lntanx是个复合函数y'=(1/tanx)*(tanx)'=(1/tanx)*[1/(cosx)^2

已知sin(x+2y)=3sinx,求tan(x+y)*coty

sin(x+2y)=3sinx,sin[(x+y)+y]=3sin[(x+y)-y],sin(x+y)cos(y)+cos(x+y)sin(y)=3[sin(x+y)cos(y)-cos(x+y)si

y′=y/x+tan[(y/x)^2]

设一个变量u=y/x,带入方程很好求解,解不出来再联系我哈

cos(2x+y)=3cosy,求tanx*tan(x+y)

cos(2x+y)=3cosycos(x+y+x)=3cos(x+y-x)cos(x+y)cosx-sin(x+y)sinx=3[cos(x+y)cosx+sin(x+y)sinx]2cos(x+y)