y=2x^2+x求dy/dx
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y=2x^2+x求dy/dxy=2x^2+x求dy/dxy=2x^2+x求dy/dxdy=d2x²++dxdy=2xdx+dx所以dy/dx=2x+14x+1dy=d2x²++dx
y=2x^2+x求dy/dx
y=2x^2+x求dy/dx
y=2x^2+x求dy/dx
dy=d2x²++dx
dy=2xdx+dx
所以dy/dx=2x+1
4x+1
dy=d2x²++dx
dy=4xdx+dx
所以dy/dx=4x+1
f(x)'=4x+1
dy/dx=4x+1
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