I need some help on knowing how to tackle this problem. I missed the class where we discussed this so i'm a bit clueless on how to do it .

One solution of the differential equation

(4x^2)y'' +(4x)y' + ((4x^2) -1)y = 0

is y1(x) = x^(-1/2)sinx. Find a second independent solution y2(x)

Any help is appreciated