Помогите пожалуйста с зеданием:

1. y'=-7sin(x)-5cos(x)
2. y'=-10sin(2x)
3. y'=cos^2(x)-sin^2(x)
4. y'= $\frac{cos^2(x)+sin^2(x)}{cos^2(x)}= \frac{1}{cos^2(x)}$
5. y'= $\frac{2}{cos^2(x)} + \frac{1}{sin^2(x)}$
6. y'=2-3cos(3x)
7. y'=cos(x)(1+cos(x))-sin^2(x)
8. y'= $\frac{sin(x)(3+cos(x))+sin(x)(3-cos(x))}{(3+cos(x))^2}= \frac{6sin(x)}{(3+cos(x))^2}$
9. y'= $\frac{ \frac{-2tg(x)}{cos^2(x)}- \frac{3-2tg(x)}{cos^2(x)} }{tg^2(x)} = \frac{-3}{sin^2(x)}$