Неопределени интеграли

[Nervniq]

1. [tex]\int( \frac{5}{cos^2 3x}+ \frac{3}{( \sqrt{1-4x^2} )} ).dx[/tex]

2. [tex]\int \frac{4x-arctg^3 5x}{1+25x^2}.dx[/tex]

3. [tex]\int \frac{dx}{x ln^3 x}[/tex]

4. [tex]\int \frac{cosx}{1+3cos^2 x}.dx[/tex]

Благодаря предварително!

[peyo]

1. [tex]\int( \frac{5}{cos^2 3x}+ \frac{3}{( \sqrt{1-4x^2} )} ).dx[/tex]

2. [tex]\int \frac{4x-arctg^3 5x}{1+25x^2}.dx[/tex]

3. [tex]\int \frac{dx}{x ln^3 x}[/tex]

4. [tex]\int \frac{cosx}{1+3cos^2 x}.dx[/tex]

Благодаря предварително!

https://www.matematika.bg/reshavane-na-zadachi/programa-za-reshavane-na-integrali.html?integral=1%2F%28x*ln%28x%29%5E3%29

[Nervniq]

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