z=f(x,y)=x^3 + x^2 * y + x^2 ln(2+y)+e^(x+5) *y 求导数 dz/dx
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z=f(x,y)=x^3 + x^2 * y + x^2 ln(2+y)+e^(x+5) *y 求导数 dz/dx
![z=f(x,y)=x^3 + x^2 * y + x^2 ln(2+y)+e^(x+5) *y 求导数 dz/dx](/uploads/image/z/16990115-59-5.jpg?t=z%3Df%28x%2Cy%29%3Dx%5E3+%2B+x%5E2+%2A+y+%2B+x%5E2+ln%282%2By%29%2Be%5E%28x%2B5%29+%2Ay+%E6%B1%82%E5%AF%BC%E6%95%B0+dz%2Fdx)
z=f(x,y)=x^3 + x^2 * y + x^2 ln(2+y)+e^(x+5) *y
dz/dx=3x^2+2xy+2xln(2+y)+e^(x+5)*y =3x^2+2x[y+ln(2+y)]+e^(x+5)*y
dz/dy=x^2 +x^2 /(2+y)+e^(x+5)
dz/dx=3x^2+2xy+2xln(2+y)+e^(x+5)*y =3x^2+2x[y+ln(2+y)]+e^(x+5)*y
dz/dy=x^2 +x^2 /(2+y)+e^(x+5)
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