Hello! I am trying to get a result from weibull function. In particular I write =WEIBULL(100;693,38;4,25;TRUE) (where x=100, a=693.38, b=4.25) an i take the #NUM! error message
Trying to figure out where the problem starts and trying to have a result using maths and not the Weibull equation I realized that when you type for example "=(-100000/693,38)^4,25" you get this error message and the only solution is to type "=(-1)*(100000/693,38)^4,25" to get the right answer. Any ideas why this is happening? And why the weibull function does not work for me?

Thank you in advance!