What is expand (x+4y)dx+(4x-y)dy ?

The solution to expand (x+4y)dx+(4x-y)dy is xdx+4ydx+4xdy-ydy

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expand (x+4y)dx+(4x-y)dy

expand

(x + 4 y) d x + (4 x - y) d y

x d x + 4 y d x + 4 x d y - y d y

Solution steps

(x + 4 y) d x + (4 x - y) d y

Expand

d x (x + 4 y) : x d x + 4 y d x

= x d x + 4 y d x + (4 x - y) d y

Expand

d y (4 x - y) : 4 x d y - y d y

= x d x + 4 y d x + 4 x d y - y d y

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

e^{2 t} (t - 2)^{2}

(16 = \frac{1}{2} x + \frac{3}{2}) 2

(x - 1) 2 x - x^{2} + arcsin (x - 1)

x - 5 x + 5

What is expand (x+4y)dx+(4x-y)dy ?
The solution to expand (x+4y)dx+(4x-y)dy is xdx+4ydx+4xdy-ydy