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1

Here, we show you a step-by-step solved example of differential equations. This solution was automatically generated by our smart calculator:

$\frac{dy}{dx}=\sin\left(5x\right)$
2

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

$dy=\sin\left(5x\right)\cdot dx$
3

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

$\int1dy=\int\sin\left(5x\right)dx$

The integral of a constant is equal to the constant times the integral's variable

$y$
4

Solve the integral $\int1dy$ and replace the result in the differential equation

$y=\int\sin\left(5x\right)dx$

We can solve the integral $\int\sin\left(5x\right)dx$ by applying integration by substitution method (also called U-Substitution). First, we must identify a section within the integral with a new variable (let's call it $u$), which when substituted makes the integral easier. We see that $5x$ it's a good candidate for substitution. Let's define a variable $u$ and assign it to the choosen part

$u=5x$

Now, in order to rewrite $dx$ in terms of $du$, we need to find the derivative of $u$. We need to calculate $du$, we can do that by deriving the equation above

$du=5dx$

Isolate $dx$ in the previous equation

$dx=\frac{du}{5}$

Substituting $u$ and $dx$ in the integral and simplify

$\int\frac{\sin\left(u\right)}{5}du$

Take the constant $\frac{1}{5}$ out of the integral

$\frac{1}{5}\int\sin\left(u\right)du$

Apply the integral of the sine function: $\int\sin(x)dx=-\cos(x)$

$-\left(\frac{1}{5}\right)\cos\left(u\right)$

Multiply the fraction and term in $-\left(\frac{1}{5}\right)\cos\left(u\right)$

$-\frac{1}{5}\cos\left(u\right)$

Replace $u$ with the value that we assigned to it in the beginning: $5x$

$-\frac{1}{5}\cos\left(5x\right)$

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

$-\frac{1}{5}\cos\left(5x\right)+C_0$
5

Solve the integral $\int\sin\left(5x\right)dx$ and replace the result in the differential equation

$y=-\frac{1}{5}\cos\left(5x\right)+C_0$

Risposta finale al problema

$y=-\frac{1}{5}\cos\left(5x\right)+C_0$

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