trivial
<black box>

>>7684807
It's not. Let R be reflexive and S contain x !~ x. Then x∈S⊂R∪S

Sure you didn't mean to use "the other big U thingy"?

fuck off with your homework this is trivial as fuck

Is it me, or have others noticed a spike in these "homework lamely pretending not to be homework" threads?

>>7684807
? It's not a true statement

>>7684859
Thanks for doing my homework for me mate ;^)
I knew I can always rely on /sci/

>>7684807
Are you sure you didn't mean ∩ ?

>>7684867
Not only you. And there's also an insistence that these threads are then okay because
>not homework :^)

>>7684911
95% of Argentinian kids learn this in first grade. Can you solve it?
"Prove that [math] \forall x (F \land G) \equiv \forall x F \land \forall x G[/math]"

>>7684915
80% of Singaporean 5th graders solved this problem correctly. Can you?

Consider the elliptic curve [math]E : y^2 = x^3 + 2x + 1 \pmod{11}[/math].
a) Find all points on the curve [math]E[/math].
b) Solve [math]x(0, 1) = (5, 9)[/math] for [math]x[/math].

R U S reflexive if

r = R is reflexive, s = S is reflexive.

r ^ s → r. Alternatively r ^ s → s.

>>7684807
>Help me with my homework. You're smart if you do. :^)

If R is reflexive then the diagonal is included in R which is a subset of R ∪ S so the diagonal is also in R ∪ S which means it is relfexive.

The case where S is reflexive goes analogously.

>>7684888
>implying anything this trivial could be anybody's homework, even that of a retarded monkey on ten hits of acid

>>7684807

>chinese

Yeah, they just memorize 1000's of pages m8, they aint smart.

>>7684934
Come on, that's easy.

>>7684807
You mean 90% of 7th year Chinese Math students cheat on this problem every year.

73% of Ukranian 6th graders are able to solve this problem. Are you?

Can Euclidean plane be partitioned into disjoint circumferences?

>>7684807
85% of Vietnamese eleven year olds know the answer to this:

"What six letter word is OP?"