Thread: |xtanx| <= |x|

I simplified the equation above to |tanx| <= 1
so -1 <= to tanx <= 1, so what does this say about x?

The problem says "for what x is it true that: ?"

Originally Posted by zweevu

I simplified the equation above to |tanx| <= 1
so -1 <= to tanx <= 1, so what does this say about x?

The problem says "for what x is it true that: ?"

Hi

-1 <= to tanx <= 1 for -pi/4 + k pi <= x <= pi/4 + k pi