求y=incosarctan(shx)的导数,答案是-thx 求过程

作者&投稿:郭龚 (若有异议请与网页底部的电邮联系)
谁能交我做下这题 y=5sec^7x-7sec^5x和y=lncosarctan(shx) 求函数的导数~

我要是告诉你解题过程和答案那不就等于是我在给你写作业了,到时候你们老师表扬的是你又不是我,不行,这样会害了你的。不要耍小聪明哦。

y=f{g[h(p(x))]}
y'=f'(g)g'(h)h'(p)p'(x)
y'=1/cos(arctan(sinx)) *(-sin(arctan(sinx))*cosx/(1+sinx^2)
= -tan(arctan(sinx))*cosx/(1+sinx^2)
=-sinxcosx/(1+sinx^2)



∂z/∂x=1/(1+y²/x²)*(-y/x²)=-y/(x²+y²)∂z/∂y=1/(1+y²/x²)*1/x=x/(x²+y²)∂²z/∂x²=y/(x²+y²)*2x=2xy/(x²+y²)²∂²z/∂x∂y=-[x²+y²-2y²]/(x²+y²)²=(y²-x²)/(x²+y²)²∂²z/∂y²=-2xy/(x²+y²)²


剑河县18271448969: 求y=Incosarctan(shx)的导数 -
古庆卓舒: y=Incosarctan(shx) y'=[lncosarctan(shx)]'=[1/cosarctan(shx)]*[-sinarctan(shx)]*[1/(1+sh²x)]*chx= -secarctan(shx)*sinarctan(shx)*1/ch²x*chx= -secarctan(shx)*sinarctan(shx)*1/chx

剑河县18271448969: 求y=incosarctan(shx)我是用y=inu,u=cosv v=arctanw w=sh -
古庆卓舒: 检验下吧 y'=1/u*(-sinv)*1/(1+w^2)*cosx =1/cosarctan(shx)*(-sinarctan(shx))*1/(1+(shx)^2)*cosx 最后w=shx是不是双曲正弦函数啊?我是当成正弦函数算的,你自己替换一下吧

剑河县18271448969: y=ln cos arctan(shx)求导 -
古庆卓舒: 解:因为 dy =d [ cos arctan (sh x) ] / cos arctan (sh x) = -[ sin arctan (sh x) ] *d [ arctan (sh x) ] / cos arctan (sh x) = -[ tan arctan (sh x) ] *d (sh x) / [ 1 +(sh x)^2 ] = -sh x *ch x dx / (ch x)^2 = -th x dx. 所以 dy /dx = -th x.= = = = = = = = = 利用一阶微分形式不...

剑河县18271448969: y=ln cos arctan(shx)求导 -
古庆卓舒:[答案] 因为 dy =d [ cos arctan (sh x) ] / cos arctan (sh x) = -[ sin arctan (sh x) ] *d [ arctan (sh x) ] / cos arctan (sh x) = -[ tan arctan (sh x) ] *d (sh x) / [ 1 +(sh x)^2 ] = -sh x *ch x dx / (ch x)^2 = -th x dx. 所以 dy /dx = -th x. = = = = = = = = = 利用一阶微分形式不变性. 也...

剑河县18271448969: 谁能交我做下这题 y=5sec^7x - 7sec^5x和y=lncosarctan(shx) 求函数的导数过程最好写下 -
古庆卓舒:[答案] y'=(5sec^7x-7sec^5x)' =5*7*(sec^6x)*(secx)'+7*5*(sec^4x)*(secx)' =35*(sec^6x)* secx * tanx+35*(sec^4x)* secx * tanx =35(sec... =[cos(arctanshx)]'/[cos(arctanshx)] 又因为[cos(arctanshx)]' =[-xin(arctanshx)]*(arctanshx)' =[-xin(arctanshx)]*[1/(1+sh^2x)]*(shx)...

剑河县18271448969: 谁能交我做下这题 y=5sec^7x - 7sec^5x和y=lncosarctan(shx) 求函数的导数 -
古庆卓舒: y'=(5sec^7x-7sec^5x)'=5*7*(sec^6x)*(secx)'+7*5*(sec^4x)*(secx)'=35*(sec^6x)* secx * tanx+35*(sec^4x)* secx * tanx=35(sec^5x)tanx*(sec^2x - 1)=35sec^5x * tan^3xy'={ln[cos(arctanshx)]}'=[cos(arctanshx)]'/[cos(arctanshx)]又因为[cos(...

剑河县18271448969: 已知y(x),求y'.函数y=cos(x+y) -
古庆卓舒: y = cos(x+y) y' = -sin(x+y) . (1+y')(1+sin(x+y) )y'= -sin(x+y) y'= -sin(x+y)/(1+sin(x+y) )

剑河县18271448969: 求y=In(1+x)的n介导数 -
古庆卓舒: 解:y`=1/(x+1) ,y``=-1/(1+x)^2, y```=1x2/(1+x)^3 ,y````=-1x2x3/(1+x)^4 ······ y(n)=(-1)^(n-1)(n-1)!(1+x)^n(n为导的次数) 故In(1+x)的n介导数=(-1)^(n-1)(n-1)!(1+x)^n

剑河县18271448969: 输入x,计算y=x^2+sh(x).要求编写一个通用函数过程,求双曲正弦函数的值;sh(x)=(EXP(x) - EXP( - x))/2 vb语言 -
古庆卓舒:[答案] Option Explicit Private Sub Command1_Click() Dim x As Single Dim y As Single x = Val(InputBox("输入X!")) y = f(x) Print y End Sub Private Function f(ByVal x As Single) As Single Sh = x ^ 2 + (Exp(x) - Exp(-x)) / 2 End Function

剑河县18271448969: 已知x - y=xy,求(2x - xy - 2y)/(x - 2xy - y)的值 -
古庆卓舒: x-y=xy2x-xy-2y=2xy-xy=xy x-2xy-y=xy-2xy=-xy 所以(2x-xy-2y)/(x-2xy-y)=xy/-xy=-1

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