5pts: Solve the following Euler equation Hot get credit! (f) +7xy+9y=0 with initial conditions y(1) 1 and 3(1)=5. 5pts: For the same equation (t) find a power series solution centered at To-1 with initial conditions y(-1)-7 and y/(-1)-9. Give a recursion relation of its general coefficients and then calculate these coefficients up to degree four.