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Integral of (x^2+2y)d*y+(2x+y^2)d*y dx

Limits of integration:

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The graph:

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Piecewise:

The solution

You have entered [src]
 oo                                     
  /                                     
 |                                      
 |  // 2      \       /       2\    \   
 |  \\x  + 2*y/*d*y + \2*x + y /*d*y/ dx
 |                                      
/                                       
2                                       
$$\int\limits_{2}^{\infty} \left(y d \left(2 x + y^{2}\right) + y d \left(x^{2} + 2 y\right)\right)\, dx$$
Integral(((x^2 + 2*y)*d)*y + ((2*x + y^2)*d)*y, (x, 2, oo))
Detail solution
  1. Integrate term-by-term:

    1. The integral of a constant times a function is the constant times the integral of the function:

      1. The integral of a constant times a function is the constant times the integral of the function:

        1. Integrate term-by-term:

          1. The integral of a constant times a function is the constant times the integral of the function:

            1. The integral of is when :

            So, the result is:

          1. The integral of a constant is the constant times the variable of integration:

          The result is:

        So, the result is:

      So, the result is:

    1. The integral of a constant times a function is the constant times the integral of the function:

      1. The integral of a constant times a function is the constant times the integral of the function:

        1. Integrate term-by-term:

          1. The integral of is when :

          1. The integral of a constant is the constant times the variable of integration:

          The result is:

        So, the result is:

      So, the result is:

    The result is:

  2. Now simplify:

  3. Add the constant of integration:


The answer is:

The answer (Indefinite) [src]
  /                                                                             
 |                                                                  / 3        \
 | // 2      \       /       2\    \              / 2      2\       |x         |
 | \\x  + 2*y/*d*y + \2*x + y /*d*y/ dx = C + d*y*\x  + x*y / + d*y*|-- + 2*x*y|
 |                                                                  \3         /
/                                                                               
$$\int \left(y d \left(2 x + y^{2}\right) + y d \left(x^{2} + 2 y\right)\right)\, dx = C + d y \left(x^{2} + x y^{2}\right) + d y \left(\frac{x^{3}}{3} + 2 x y\right)$$
The answer [src]
                    2        3   20*d*y
oo*sign(d*y) - 4*d*y  - 2*d*y  - ------
                                   3   
$$- 2 d y^{3} - 4 d y^{2} - \frac{20 d y}{3} + \infty \operatorname{sign}{\left(d y \right)}$$
=
=
                    2        3   20*d*y
oo*sign(d*y) - 4*d*y  - 2*d*y  - ------
                                   3   
$$- 2 d y^{3} - 4 d y^{2} - \frac{20 d y}{3} + \infty \operatorname{sign}{\left(d y \right)}$$
oo*sign(d*y) - 4*d*y^2 - 2*d*y^3 - 20*d*y/3

    Use the examples entering the upper and lower limits of integration.