y= 4x^3+2x-5 differentiate to find dy/dx

只是我看不懂y=4x3（这是三次方）+2x-5differentiate to find dy/dx 2*x*y^2（dy／dx）- x^3（dy／dx）=2y^3 dy/dx 3x^2+4y^3-2x-5y+1=0 (x^2)dy+（y^2)dx=dx-dy dy/dx-y/x=x^2 dy/dx=(x^4+y^3)/xy^2 dy/dx=2y/x+3x/2y 求dy/dx=(x-y+5)/(x+y-2) 二阶求导数Find d^2y/dx^2 if y^2+2y=4x^2+2x2y*dy/dx+2*dy/dx=8x+2dy dy/dx-2y/(1+x)=(x+1)^3 微分方程 dy/dx=(e^y+3x)/x^2 (4y^3-x)dy/dx=y 求通解