" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(-∞, 3]
b) R - {4}
(-∞, 4) u (4, +∞)
c) R - {-8,0}
(-∞, -8) u (-8, 0) u (0, +∞)
d) R - (-3,4]
(-∞, -3] u (4, +∞)