What is the solution for dx+e^{9x}dy=0 ?

The solution for dx+e^{9x}dy=0 is y= 1/9 e^{-9x}+c_{1}

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dx+e^{9x}dy=0

d x + e^{9 x} d y = 0

y = \frac{1}{9} e^{- 9 x} + c_{1}

Solution steps

d x + e^{9 x} d y = 0

Let

y

be the dependent variable. Divide by

d x

1 + e^{9 x} \frac{d y}{d x} = 0

Substitute

\frac{d y}{d x}

with

y^{'} (x)

1 + e^{9 x} y^{^{'}} (x) = 0

Isolate

y^{'} (x) : y^{'} (x) = - \frac{1}{e ^{9 x}}

f^{^{'}} (x) = g (x)

then

f (x) = \int g (x) d x

y = \int - \frac{1}{e ^{9 x}} d x

\int - \frac{1}{e ^{9 x}} d x = \frac{1}{9} e^{- 9 x} + c_{1}

y = \frac{1}{9} e^{- 9 x} + c_{1}

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What is the solution for dx+e^{9x}dy=0 ?
The solution for dx+e^{9x}dy=0 is y= 1/9 e^{-9x}+c_{1}