2. solve the ivp u"(x) + xu(x) = 0; u(0) = 1, u'(0) = 1. note: your independent variable is x and your unknown function is u. your final answer should look like u(x) = c1y1(x) + c2y2(x) where y1 and y2 are two linearly independent series solutions (which you will find by using the procedures we learned in class) and c, and c2 are numbers obtained when you apply the initial conditions. as and ivp, there cannot be arbitrary constants in the solution