Civil Engineering Archive: Questions from August 19, 2022
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Solve the differential equation of \( \frac{d y}{d x}=\frac{y}{x \ln x} \) \( \ln y=c \ln x \) \[ y=c \ln x \] \[ y=\ln x+c \] \[ y^{\wedge} 2=\ln x+c \]1 answer -
solve the differential equation \( 3\left(3 x^{\wedge} 2+y^{\wedge} 2\right) d x-2 x y d y=0 \) \[ \begin{array}{l} y=c\left(9 x^{\wedge} 2+y^{\wedge} 2\right) \\ x=c\left(9 x^{\wedge} 2+9 y^{\wedge}1 answer