- #1
sara_87
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Can anyone offer any help with these questions?
Question 1:
In each part specify the set by listing its elements:
{ x | x Є Z and (x+1)² < 10 }
Answer:
am i supposed to write out all the possible x's, so that my answer would be:
{0,1,2,-1,-2,-3,-4}
or do i write out the over all set which is:
{0,1,4,9}
Question 2:
If A={1,2,3,4,5}, which of the following sets equal A?
f) { x | x Є N and x < 6}
Answer:
i put that f) doesn't equal A because 0 belongs to N but doesn't belong to A...is that right?
Question 3:
Use Venn diagrams to show that for sets X, Y:
a) X(X+Y) = X
b) X + XY = X
c) X – Y = XY’
Answer:
i don't know what to do
Question 1:
In each part specify the set by listing its elements:
{ x | x Є Z and (x+1)² < 10 }
Answer:
am i supposed to write out all the possible x's, so that my answer would be:
{0,1,2,-1,-2,-3,-4}
or do i write out the over all set which is:
{0,1,4,9}
Question 2:
If A={1,2,3,4,5}, which of the following sets equal A?
f) { x | x Є N and x < 6}
Answer:
i put that f) doesn't equal A because 0 belongs to N but doesn't belong to A...is that right?
Question 3:
Use Venn diagrams to show that for sets X, Y:
a) X(X+Y) = X
b) X + XY = X
c) X – Y = XY’
Answer:
i don't know what to do