Solve the differential equation $\frac{dy}{dx}=\frac{2x}{3y^2}$

Step-by-step Solution

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Final answer to the problem

$y=\sqrt[3]{x^2+C_0}$
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Step-by-step Solution

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  • Exact Differential Equation
  • Linear Differential Equation
  • Separable Differential Equation
  • Homogeneous Differential Equation
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  • Product of Binomials with Common Term
  • FOIL Method
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1

Group the terms of the differential equation. Move the terms of the $y$ variable to the left side, and the terms of the $x$ variable to the right side of the equality

$3y^2dy=2xdx$
2

Integrate both sides of the differential equation, the left side with respect to $y$, and the right side with respect to $x$

$\int3y^2dy=\int2xdx$

The integral of a function times a constant ($3$) is equal to the constant times the integral of the function

$3\int y^2dy$

Apply the power rule for integration, $\displaystyle\int x^n dx=\frac{x^{n+1}}{n+1}$, where $n$ represents a number or constant function, such as $2$

$3\left(\frac{y^{3}}{3}\right)$

Simplify the fraction $3\left(\frac{y^{3}}{3}\right)$

$y^{3}$
3

Solve the integral $\int3y^2dy$ and replace the result in the differential equation

$y^{3}=\int2xdx$

The integral of a function times a constant ($2$) is equal to the constant times the integral of the function

$2\int xdx$

Applying the power rule for integration, $\displaystyle\int x^n dx=\frac{x^{n+1}}{n+1}$, where $n$ represents a number or constant function, in this case $n=1$

$2\cdot \left(\frac{1}{2}\right)x^2$

Multiply the fraction and term in $2\cdot \left(\frac{1}{2}\right)x^2$

$x^2$

As the integral that we are solving is an indefinite integral, when we finish integrating we must add the constant of integration $C$

$x^2+C_0$
4

Solve the integral $\int2xdx$ and replace the result in the differential equation

$y^{3}=x^2+C_0$

Removing the variable's exponent raising both sides of the equation to the power of $\frac{1}{3}$

$\sqrt[3]{y^{3}}=\sqrt[3]{x^2+C_0}$

Cancel exponents $3$ and $1$

$y=\sqrt[3]{x^2+C_0}$
5

Find the explicit solution to the differential equation. We need to isolate the variable $y$

$y=\sqrt[3]{x^2+C_0}$

Final answer to the problem

$y=\sqrt[3]{x^2+C_0}$

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Function Plot

Plotting: $\frac{dy}{dx}+\frac{-2x}{3y^2}$

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Got a different answer? Verify it!

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1
2
3
4
5
6
7
8
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: Differential Equations

A differential equation is a mathematical equation that relates some function with its derivatives.

Used Formulas

See formulas (2)

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