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2 Lines Intersection
Enter any 2 line equations, and the calculator will determine the following:
* Are the lines parallel?
* Are the lines perpendicular
* Do the lines intersect at some point, and if so, which point?
* Is the system of equations dependent, independent, or inconsistent

Set Notation
Given two number sets A and B, this determines the following:
* Union of A and B, denoted A U B
* Intersection of A and B, denoted A ∩ B
* Elements in A not in B, denoted A - B
* Elements in B not in A, denoted B - A
* Symmetric Difference A Δ B
* The Concatenation A · B
* The Cartesian Product A x B
* Cardinality of A = |A|
* Cardinality of B = |B|
* Jaccard Index J(A,B)
* Jaccard Distance Jσ(A,B)
* Dice's Coefficient
* If A is a subset of B
* If B is a subset of A

Venn Diagram (2 circles)
Given two circles A and B with an intersection piece of C, this will calculate all relevant probabilities of the Venn Diagram.

100 students were interviewed. 72 ate at A, 52 ate at B. How many ate at A and B?
if n(A) = 6, n(A intersect B) = 2 and n(A union B) = 11, find n(B)
2x^2+4x < 3x+6
The sum is greater than 7, the sum is divisible by 2