Hi there, How are you?
Just wondered the safety engineering - fault tree. How did you get on with this question as i'm a little stuck.
How did your HND go?
Ah ok, thanks.
I think I have the formula correct, but it was the number that has been used that has confused me.
If you use:
t = -5 ln(4/10)
you get:
t = 4.58
to get 2.55 its actually:
t = -5 ln(6/10)
Which makes sense when putting into a graph.
Unless I missed something?