1.- Solve the following Cauchy-Euler equation, not homogeneous. Use the change of variable method, =

2+10+8=2

2.-A pendulum of 1 / 5 in length is released with a speed of 1/2 radian / sec, from an end located at 1/10 radians from the vertical towards that vertical. Find the equation of motion

3.-An analogous series circuit is represented by the differential equation - 6 + 9 = 62 + 2. Solve it using the method of indeterminate coefficients.