Differential Equation

Help please.
(1+e^(x) y+x e^(x) y) dx + (x e^(x) + 2) dy=0

can u help me obtain the general equation of this
(( xcsc (y/x) - y ))dx + xdy = 0

Find the diff equation of family of circles with center on the line y= -x and passing through the origin.

THANK YOU :)

(x²+4) y' + 3 xy = x

(y^4 - 2xy) dx + 3 x^2 dy= 0

Electric Circuits

Please solve completely. Thank you.

An RL circuit has the following values: R=550 ohms, L=4 henrys and Esub0=110 volts. If i(0)= 0 in the circuit, when does the current reach 90% of its limiting value?

Please help me solve this Differential Equation

2ydx+x(x²lny -1)dy=0

The topic is chemical reaction rate.

Two substances A and B are combined to form a product C. The formation of product is proportional to the time the reactants are combined. The final product is composed of two parts of B for every part of A. If initially A is 30 kg and B is 20 kg, and 5 kg of the product is formed after 30 mins., find the function of product formed at any given time.

y(2-3xy)dx-xdy=0