A) What is the general solution for:
(8x + y^10 / e^9y) y' = y
TIP: See it as linear in its variable x, use: x' + p(y) x = g(y)
B) In a series RL circuit with L = 1/100 H, R = 60 ohms, and E = 20 volts, determine the limit of the maximum current reached (to the function you found to determine the current as a function of time apply the limit when t goes to infinity) and determine the time in which it reaches half of that value. Take i(0) = 0 A.
C) In a series RL circuit with L = 1/20 H, R = 200 ohms, and E = 60 V, find the time in seconds in which the current has the value 27/100 A. Take i(0) = 0 A.