1. Use a counter example to disprove this statement X < 3 implies x^2 < 9

2.prove that n^2 + n + 41 does not take prime values for all positive integers

3. Are any two straight lines that never meet necessarily parallel

Guest Oct 31, 2018

#1**+2 **

well I can't answer the other two but I can answer the last one

if two lines are not parallel they will meet at some point because a line goes at both directions at an infinite scale and sooner or later they will meet the only exception is when your dealing with a ray a line that starts at a point and goes on in one direction at an infinite scale

I hope this was helpful

DarkCalculis
Oct 31, 2018

#2**+2 **

The first one is UNtrue because, what if x is less than negative three?

ElectricPavlov
Oct 31, 2018