Thread: Write the following sets using interval notation?

{xЄR | X squared>4}
{xЄR | x<0} ∩ {yЄR | y squared ≥25}
{xЄR | -5≤ x≤ 5} U {xЄR | x-10<30}

thanks

Originally Posted by b0mb3rz

{xЄR | X squared>4}
{xЄR | x<0} ∩ {yЄR | y squared ≥25}
{xЄR | -5≤ x≤ 5} U {xЄR | x-10<30}

thanks

All your questions are quite straight forward, so I'm interested to know where you have had difficulties ... ?

Originally Posted by b0mb3rz

{xЄR | X squared>4}
{xЄR | x<0} ∩ {yЄR | y squared ≥25}
{xЄR | -5≤ x≤ 5} U {xЄR | x-10<30}

thanks

I will try

1. (-2, 2)
2. [-5.5]
3.[-5,5] U (-infinty ,20)
= [-5,20)

yeah thanks,
i tried the questions before hand and got some right just wanted to make sure
first week at uni so not used to lectures and stuff