Question

решить уравнения с Интегралами

Answer 1

1.

$\int\limits(5x + \frac{2}{x} ) dx = \int\limits5x dx + \int\limits\frac{2}{x} dx = \\ = \frac{5 {x}^{2} }{2} + 2 ln( |x| ) + C$

2.

$\int\limits(4 {x}^{3} - 6 {x}^{2} - 2x - 3)dx = \\ = \frac{4 {x}^{4} }{4} - \frac{6 {x}^{3} }{3} - \frac{2 {x}^{2} }{2} - 3x + C = \\ = {x}^{4} - 2 {x}^{3} - {x}^{2} - 3x + C$

3.

$\int\limits(4 {e}^{x} + 8 {x}^{3} )dx = 4e {}^{x} + \frac{8 {x}^{4} }{4} + C = \\ = 4e {}^{x} + 2 {x}^{4} + C$

4.

$\int\limits \frac{3x + 4 {x}^{2} - 6 {x}^{3} }{x} dx =\int\limits ( \frac{3x}{x} + \frac{4 {x}^{2} }{x} - \frac{6 {x}^{3} }{x} ) dx = \\ = \int\limits(3 + 4x - 6 {x}^{2}) dx = 3x + 2 {x}^{2} - 2 {x}^{3} + C$

5.

$\int\limits( \sin(x) - \frac{3}{ \cos {}^{2} (x) } )dx = - \cos(x) - 3tg(x) + C \\$