N+l the function s(x)=5 )_ m-on(n +1) !2 saisies the differential equation (a) +x+(+1)f =0 dx b) 2x -1)f =o dx dx e) +-1)s =0 (d) -(-1)f =0 dx dx

n+l The function s(x)=5 )_ m-on(n +1) !2 Saisies the differential equation (a) +x+(+1)f =0 dx b) 2x -1)f =o dx dx e) +-1)s =0 (d) -(-1)f =0 dx dx