# Math Help - Need urgent help

1. ## Need urgent help

i have no idea what these mean:
http://img22.imageshack.us/img22/8144/assignment2.jpg

but does anyone know how to solve it? if so could i please have the answers and how you solved it?

thankyou.

2. Originally Posted by THAT MAN
i have no idea what these mean:
http://img22.imageshack.us/img22/8144/assignment2.jpg

but does anyone know how to solve it? if so could i please have the answers and how you solved it?

thankyou.
image attached

CB

3. Originally Posted by THAT MAN
i have no idea what these mean:
http://img22.imageshack.us/img22/8144/assignment2.jpg

but does anyone know how to solve it? if so could i please have the answers and how you solved it?

thankyou.
5(i) asks for the truth value of:

$\forall x: \ 3-x^2 \le 9$

Now $x^2$ is always greater than or equal zero and has a minimum when $x=0$, so $3-x^2$ has a maximum when $x=0$ and there it takes the value $3 \le 9$ so the statement is true.

CB