Por favor alguien que me ayude con unos ejercicios de diferenciales.

1- y2/x dy/dx = 1+x^2

2- y + x dy/dx = 0

3- cos(y)dy/dx = sen(x+y)

4- (2y+xy)dy/dx = 1+4/x+4/x^2

5- 3dy/dx = 4x/y^2

6- dy/dx = (x+1)2- 2y/y

7- dy/dx+y = y[sen(x)+1]

8- dy/dx = 4x+xy^2/2y+x^2y

9- dy/dx y/x^2-2x+1/y+3

10- ln(y^x)dy/dx = 3x^2y

11- e^x+y dy/dx = 2x

12- (x+y)^2 dy/dx = x2 +y2

13- xsen(y)dy/dx = sec(y)

14- 3x^2y-6x^3-y^2+2xy+(x^2-xy)dy/dx=0

15- x/y dy/dx= 2y^2+1/x+1

16-[cos(x+y)+sen(x-y)]dy/dx=cos(2x)