C959 WGU unit 4 questions with 100% correct answers
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Course
WGU C959 - Discrete Math
Institution
Oxford University (OX)
diagonal matrix
square matrix which all non-diagonal entries are 0
diagonal entries can be 0
identity matrix
diagonal matrix which all entries along main diagonal is 1, all other entries = 0
can different sized matrices be added?
no
matrix addition
[3|-4] + [-2|8]
[1|...
C959: Discrete Math 1 questions with
100% correct answers
Set Difference - answer A - B, the set containing those elements that are in A but not in B
Set Symmetric Difference - answer A ⊕ B: the set of elements that are a member of exactly one of A and
B, but not both.
An alternative definition of the symmetric difference operation is:
A⊕B=(A-B)∪(B-A)
Set Complement - answer the set of all elements in U that are not elements of A.
An alternative definition of A is U - A.
Set Intersection - answer A ∩ B: the resulting set that contains all elements are in both A and B
Set Union - answer A ∪ B: the union of all elements in A and in B
Domain (function) - answer The set of all possible input values for the function
Target (function) - answer the set a function maps into
Range (function) - answer he subset of the target set (codomain) and consists of all of the mapped points
Function equality - answer if two functions have the same domain, the same codomain, and map each
element of their common domain to the same element in their common codomain
Floor function - answer (L backwards L): round down, the largest integer y such that y ≤ x.
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