Solve for x:

x^2 - x + 1 = 0

 

what class?
many ways to do this, what section are you in?

 

plug into quadratic formula and

 

this is actually Civil Engineering: Data Analysis, working with statistics and probabilities and shit. I have to analyse a graph but dont know how to do it exactly, and i thought that if i find the first y intercept, it would help me.

Yeah, I know, its embarassing, Im an Engineering student and dont know how to solve that.

 

edit: lol

 

well there is no y intercept h:

 

Yeah, i see...I guess it doesnt help me. Thanks anyways.

 

Well, heres the problem, in case anyone here knows this. LOL- I doubt it.


The maximum load X (in tons) on the horizontal beams in a structure is modeled by the following probability distribution function (PDF):






x^2 - x + 1, x>0
x^3




0 otherwise





(a)Determine the median, mode, and of expected amount of X for x > 0.
(b)What is the probability that the maximum load is: x = 3
(c)What is the probability that the maximum load is: 1 < x £ 3

 

i forgot how to do these almost instantly.

 

well thats bs, the PDF isn't even integrable on its domain, so it cant be normalized.