高数求切线和法线find the equations of tangent line and normal line of the curve X的立方+Y的立方—3XY=0 at the point (2开根号下3次方,4开根号下三次方)

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高数求切线和法线find the equations of tangent line and normal line of the curve X的立方+Y的立方—3XY=0 at the point (2开根号下3次方,4开根号下三次方)

高数求切线和法线find the equations of tangent line and normal line of the curve X的立方+Y的立方—3XY=0 at the point (2开根号下3次方,4开根号下三次方)
高数求切线和法线
find the equations of tangent line and normal line of the curve X的立方+Y的立方—3XY=0 at the point (2开根号下3次方,4开根号下三次方)

高数求切线和法线find the equations of tangent line and normal line of the curve X的立方+Y的立方—3XY=0 at the point (2开根号下3次方,4开根号下三次方)
x^2+y^3-3*x*y=0
(x^2+y^3-3*x*y)'=0'
2*x+2*y^2*y'-(3*y'*x+3*y)=0
y'=(2*x-3*y)/(3*x-2*y^2)
隐函数求导
注:(y^3)'=y'*y*y+y*y'*y+y*y*y'
y是一个函数,比如f(x).
而x是自变量
(x^3)'=3*x^2
代入x,y即可
法线,据互相垂直的直线斜率k1*k2=-1

楼上前面两步是对的
x^2+y^3-3*x*y=0
(x^2+y^3-3*x*y)'=0'
2x+3y²y'-3y-3xy'=0
y'=(3y-2x)/(3y²-3x)
把点的坐标带进去
切线方程Y-y0=y'(x0)(X-x0)
法线方程Y-y0=(X-x0)*1/y'(x0)
具体答案由于看不懂你打的点就没有求出来了