Math (sets, equations)?
A=(1.5] B=[3,6) A\B = {2} – Is that correct? B\A = {} – Is that correct? Either I'm making a mistake or it's just right haha. Please give me feedback ;§
why larger/smaller with antisymmetry?
When it comes to antisymmetry of relations, why don't we simply say "If A = B and B = A," then they are the same element, and how is that different from reflexivity? And if A < B and B < A are sufficient to assert antisymmetry, then what is equality in mathematics anyway?
Power set?
M = {1} P(M) = {empty set, 1} Why do we explicitly write the empty set in the power set, but in M = {1} you leave it out, or it is there, but you don't write it down.
Compound interest?
I don't understand B) So for A) I used the formula for compound interest K0= 100,000 i=4.5% = 0.045 n= 5 years I used that and got €124,618 for A) annual interest in arrears, but what about B) if it's monthly? What did I use?
How to go from the explicit form of a straight line to the implicit form?
Hey, could you maybe explain to me in general terms how to get from the explicit representation of the even PQ to the implicit one? explicit: g: (a,b) + r • (c,d) implicit: g: ax+by= c and perhaps then with an example? g: (1,2) + r • (3,4)
How can the implication A->B be represented exclusively by NAND operations?
The question is above 🙂
Can this set be defined like this?
Good day I'm currently researching my own extension of the real numbers, such as complex numbers, and I've come across something very interesting. I call the defined set (see image below) the shift set (it's related to the properties I've discovered). If it can and is allowed to be defined this way, I think I've…
Equivalence relation?
Hey, I don't quite understand the part about transivity. How do you finally get uv × xt = uv × sy?
Prove axial symmetry?
How would I break number b) here?
Difference between E={0,1} and E={{0},{1}}?
The question is above. It's a question from set theory.
Pythagorean triples?
Are there Pythagorean triples with two equal numbers a and b? And if not, why not?