What is expand (x+y)dx+sqrt(x^2+y^2)dy ?

The solution to expand (x+y)dx+sqrt(x^2+y^2)dy is xdx+ydx+sqrt(x^2+y^2)dy

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expand (x+y)dx+sqrt(x^2+y^2)dy

expand

(x + y) d x + x^{2} + y^{2} d y

x d x + y d x + x^{2} + y^{2} d y

Solution steps

(x + y) d x + x^{2} + y^{2} d y

= (x + y) d x + d y x^{2} + y^{2}

Expand

d x (x + y) : x d x + y d x

= x d x + y d x + x^{2} + y^{2} d y

x (2 x - 1)^{2} e^{x}

\frac{( ( n + 1 ) ^{4} )}{n}

\frac{( x + 1 ) ( x + 2 )}{( 2 x + 1 ) ( x - 3 )}

\frac{3 x + 2}{( x ) ( x + 4 ) ^{2}}

y (4 x + y) d x - 2 (x^{2} - y) d y

What is expand (x+y)dx+sqrt(x^2+y^2)dy ?
The solution to expand (x+y)dx+sqrt(x^2+y^2)dy is xdx+ydx+sqrt(x^2+y^2)dy