设方程y=sin(x y),求y

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设方程y=sin(x y),求y
设函数y=y(x)由方程lny=tan(xy)所确定,求dy

左右对x求导有y'/y=sec²(xy)(y+xy')整理有y'=y²/(cos(xy)-xy)所以dy=(y²/(cos(xy)-xy))dx

设Y是方程sin(xy)-1/y-x=1所确定的函数,求(1)y|x=o (2) y'|x=o

1)y|x=o当x=0时sin(0)-1/y-0=1得:y|x=0=-1(2)y'|x=osin(xy)-1/y-x=1两边对x求导:cos(xy)(y+xy')+y'/y^2-1=0当x=0时y=-

设y是方程sin(xy)-(1/y-x)=1所确定的函数,求y'丨x=0

是把y看作关于x的函数.再问:不是很懂,给个步骤吧。谢谢。再答:1/y-x是(1/y)-x的意思,还是1/(y-x)?再问:1/(y-x)再答:把y看做x的复合函数,两边对x求导,得cos(xy)·(

设y=y(x)由方程e^y-xy=0所确定,求y'(x)

这是一个复合函数求导,y=y(x)所以求e^y的导数首先对整体求导,再对y求导即为e^y*y'xy的导数为y+x*y'(根据求导规则)所以两边求导可得e^y*y'-y-x*y'=0

已知方程sin(xy)+x+y=1确定了函数y=y(x),求y'.

两边求导得:cos(xy)*(y+xy')+1+y'=0y'[xcos(xy)+1]=-ycos(xy)-1所以,y'=-[ycos(xy)+1]/[xcos(xy)+1]

设y=y(x)由方程e^xy+sin(xy)=y确定,求dy/dx.

e^(xy)+sin(xy)=y(y+xy')e^(xy)+(y+xy')cos(xy)=y'y'=(ye^(xy)+ycos(xy))/(1-xe^(xy)-xcos(xy))

设函数y=f(x)由方程sin(x^2+y)=xy 确定,求dy\dx

这个题目要利用隐函数的求导法则.则sin(x^2+y)=xy(两边同时求导,还要结合复合函数的求导法则)cos(x^2+y)*(2x+y′)=y+xy′2xcos(x^2+y)-y=xy′-y′cos

设sin(x+y)=xy,求dy/dx.

cos(x+y)(1+y')=y+xy'dy/dx=y'=[y-cos(x+y)]/[cos(x+y)-x]

设函数y=y(x)由方程xy+e^y=1所确定,求y"(0)

xy+e^y=1e^y(0)=1y(0)=0xy'+y+e^yy'=00+y(0)+y'(0)=0y'(0)=0xy''+y'+y'+e^yy''+(y')^2e^y=00+2y'(0)+y''(0)

设函数y=f(x)由方程sin y+e^x-xy^2=0确定,求d y/d x

Fx=e^x-y^2Fy=cosy-2xydy/dx=-Fx/Fy=(y^2-e^x)/(cosy-2xy)

设方程sin y +ex(x次方)-xy 2(平方)=0确定隐函数y =y (x),求dy /dx

∵siny+e^x-xy^2=0,∴(dy/dx)cosy+e^x-[y^2+2xy(dy/dx)]=0,∴(cosy-2xy)(dy/dx)=y^2-e^x,∴dy/dx=(y^2-e^x)/(co

设y=y(x)由方程e^xy+cos(xy)=y确定,求dy(0).

x=0时,代入方程得:1+1=y,得:y=2对x求导:(y+xy')e^xy-sin(xy)*(y+xy')=y'将x=0,y=2代入得:2=y'故dy(0)=2dx

设函数y=y(x)由方程e^y+xy=e所确定,求y’(0)

两边对x求导数,得y'*e^y+y+xy'=0,在原方程中令x=0可得y=1,因此,将x=0,y=1代入上式可得y'+1=0,即y'(0)=-1.再问:对x求导时y可以当成一个常数吗?为什么要用公式(

设y=y(x)由方程x^2-sin(xy)=2y确定,求dy/dx

dy/dx=-fx/fy,你自己可以算吧

设方程e^(x+y) + sin(xy) = 1 确定的隐函数为y=y(x),求y'和y'|x=0

e^(x+y)+sin(xy)=1e^(x+y)*(1+y')+cos(xy)(y+xy')=0y'*[e*(x+y)+xcos(xy)]=-[ycos(xy)+e^(x+y)]y'=-[ycos(x

设隐函数y=y(x)由方程x^y-e^y=sin(xy)所确定,求dy

化为:e^(ylnx)-e^y=sin(xy)两边对x求导:e^(ylnx)(y'lnx+y/x)-y'e^y=cos(xy)(y+xy')y'[lnxe^(ylnx)-e^y-xcos(xy)]=[