(a) does not converge fo any x wiun |x| s < 5. let s be the set of all limit points of the set e:n en. let q. be the set of all positive rational numbers. then

(a) doeS not converge fo any X WiUn |X| S < 5. Let S be the set of all limit points of the set E:n eN. Let Q. be the set of all positive rational numbers. Then (b) SQ, (d) S nQ. * (a) Q. cS (c) Sn(R/Q,) * o 6. If x"y" is an integrating factor of the differential equation y(1 +Xy)dx + x(1-xy )dy =0, then the ordered pair (h, k) is equal to (a) (-2,-2) (b)(-2,-1) (C)(-1-2) (d)(-1-1)