A
akaaki


1.[TEX]\int \frac{dx}{sin2x+sin\frac{\Pi }{7}}[/TEX]
2.[TEX]\int \frac{cos2x dx}{{(sinx-cosx+3)}^{3}}[/TEX]
3.[TEX]\int \frac{cotx dx}{sinx\sqrt{1+{sin}^{2}x}}[/TEX]
2.[TEX]\int \frac{cos2x dx}{{(sinx-cosx+3)}^{3}}[/TEX]
3.[TEX]\int \frac{cotx dx}{sinx\sqrt{1+{sin}^{2}x}}[/TEX]