Consider these relations on the set of real numbers:

r1 = {(a, b) ∈ r2 ∣ a > b}, the greater than relation,

r2 = {(a, b) ∈ r2 ∣ a ≥ b}, the greater than or equal to relation,

r3 = {(a, b) ∈ r2 ∣ a < b}, the less than relation,

r4 = {(a, b) ∈ r2 ∣ a ≤ b}, the less than or equal to relation,

r5 = {(a, b) ∈ r2 ∣ a = b}, the equal to relation,

r6 = {(a, b) ∈ r2 ∣ a ≠ b}, the unequal to relation.

find: 9.1 34-36r1 u r3r2 ∩r4.r2 − r1r3⊕r5r4 ∩r6r1◦r2r1◦r6r2◦r3