New Equation. This one pissed me off the most.
|sin(x)|
_______
√(sec^2(x)-1)
I have also put in |sin(x)| (in red) and √(sec^2(x)-1) (in green) in for comparison.
I guess i should put some working out in. sec^2(x)-1 also equals to tan(x).
tan(x) = undefined at Pi/2, 3*Pi/2, etc.
tan(x) = 0 at 0, Pi, 2*Pi etc.
Also tan(x) = 1 at Pi/4, 3*Pi/4, etc.
|sin(x)| is the same as sin(x) but all points below the line y=0 are flipped above that line.
Now it may not look like it but the blue line breaks at sin(x)=0; √(sec^2(x)-1)=0 and √(sec^2(x)-1)=undefined; sin(x)=1 for all values of x
