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Evaluate the integral from (1,pi/2,0) t0 (2,pi,0) of (2xsiny +x) dx +(x^2 cosy + 3sin^3(y)) dy...

Evaluate the integral from (1,pi/2,0) t0 (2,pi,0) of (2xsiny +x) dx +(x^2 cosy + 3sin^3(y)) dy giving the potential function

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Let Q1=y(2) Q2 =y(3) where y=y(x) solves y'+2xy=2x^3     y(0)=1 dy/dx= (2x-y)/(x+4y)     y(1)=1 y'+ycotx=y^3sin^3x      y(pi/2)=1 (y^2-2x)dx+2xy dy=0   ...
Let Q1=y(2) Q2 =y(3) where y=y(x) solves y'+2xy=2x^3     y(0)=1 dy/dx= (2x-y)/(x+4y)     y(1)=1 y'+ycotx=y^3sin^3x      y(pi/2)=1 (y^2-2x)dx+2xy dy=0    y(1)=1 2x^2y;+4xy=3sinx    y(2pi)=0 y"+2y^-1 (y')^2=y'
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dy/dx+(y/2x)=(x/(y^3))
dy/dx+(y/2x)=(x/(y^3))
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