Solve the differential equation $\left(x^2+2y^2\right)dx=xy\cdot dy$

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Final answer to the problem

$\frac{1}{2}\ln\left|\frac{y^2}{x^2}+1\right|=\ln\left|x\right|+C_0$
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We can identify that the differential equation $\left(x^2+2y^2\right)dx=xy\cdot dy$ is homogeneous, since it is written in the standard form $M(x,y)dx+N(x,y)dy=0$, where $M(x,y)$ and $N(x,y)$ are the partial derivatives of a two-variable function $f(x,y)$ and both are homogeneous functions of the same degree

Learn how to solve integration by trigonometric substitution problems step by step online.

$\left(x^2+2y^2\right)dx=xy\cdot dy$

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Learn how to solve integration by trigonometric substitution problems step by step online. Solve the differential equation (x^2+2y^2)dx=xydy. We can identify that the differential equation \left(x^2+2y^2\right)dx=xy\cdot dy is homogeneous, since it is written in the standard form M(x,y)dx+N(x,y)dy=0, where M(x,y) and N(x,y) are the partial derivatives of a two-variable function f(x,y) and both are homogeneous functions of the same degree. Use the substitution: y=ux. Expand and simplify. Integrate both sides of the differential equation, the left side with respect to u, and the right side with respect to x.

Final answer to the problem

$\frac{1}{2}\ln\left|\frac{y^2}{x^2}+1\right|=\ln\left|x\right|+C_0$

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Function Plot

Plotting: $\left(x^2+2y^2\right)dx-xy\cdot dy$

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9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2

e
π
ln
log
log
lim
d/dx
Dx
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

How to improve your answer:

Main Topic: Integration by Trigonometric Substitution

Trigonometric substitution is the substitution of trigonometric functions for other expressions. One may use the trigonometric identities to simplify certain integrals containing radical expressions.

Used Formulas

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