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# Solve the differential equation $\frac{dy}{dx}=\frac{3x^2+4x+2}{2\left(y+1\right)}$

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##  Final answer to the problem

$y=-1+\sqrt{C_0+x^{3}+2x^2+2x+1},\:y=-1-\sqrt{C_0+x^{3}+2x^2+2x+1}$
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##  Step-by-step Solution 

How should I solve this problem?

• Choose an option
• Exact Differential Equation
• Linear Differential Equation
• Separable Differential Equation
• Homogeneous Differential Equation
• Integrate by partial fractions
• Product of Binomials with Common Term
• FOIL Method
• Integrate by substitution
• Integrate by parts
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Can't find a method? Tell us so we can add it.
1

Rewrite the differential equation in the standard form $M(x,y)dx+N(x,y)dy=0$

$2\left(y+1\right)dy-\left(3x^2+4x+2\right)dx=0$
2

The differential equation $2\left(y+1\right)dy-\left(3x^2+4x+2\right)dx=0$ is exact, 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 they satisfy the test for exactness: $\displaystyle\frac{\partial M}{\partial y}=\frac{\partial N}{\partial x}$. In other words, their second partial derivatives are equal. The general solution of the differential equation is of the form $f(x,y)=C$

$2\left(y+1\right)dy-\left(3x^2+4x+2\right)dx=0$
3

Using the test for exactness, we check that the differential equation is exact

$0=0$
4

Integrate $M(x,y)$ with respect to $x$ to get

$-x^{3}-2x^2-2x+g(y)$
5

Now take the partial derivative of $-x^{3}-2x^2-2x$ with respect to $y$ to get

$0+g'(y)$
6

Set $2\left(y+1\right)$ and $0+g'(y)$ equal to each other and isolate $g'(y)$

$g'(y)=2y+2$
7

Find $g(y)$ integrating both sides

$g(y)=y^2+2y$
8

We have found our $f(x,y)$ and it equals

$f(x,y)=-x^{3}-2x^2-2x+y^2+2y$
9

Then, the solution to the differential equation is

$-x^{3}-2x^2-2x+y^2+2y=C_0$
10

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

$y=-1+\sqrt{C_0+x^{3}+2x^2+2x+1},\:y=-1-\sqrt{C_0+x^{3}+2x^2+2x+1}$

##  Final answer to the problem

$y=-1+\sqrt{C_0+x^{3}+2x^2+2x+1},\:y=-1-\sqrt{C_0+x^{3}+2x^2+2x+1}$

##  Explore different ways to solve this problem

Solving a math problem using different methods is important because it enhances understanding, encourages critical thinking, allows for multiple solutions, and develops problem-solving strategies. Read more

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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

###  Main Topic: Differential Equations

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

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