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We have cumulative distribution function Fx.
Fx = 1/1000x - 1/4
How do we get probability density function (gx) from Fx?
If we have gx, to get Fx, we need to integrate from 0 to x. Am I right?
So to get gx from Fx, we need to find the derivative, because it's an opposite operation from integration.
g(x) = dF/dx.Quote:
Originally Posted by Nforce
By the way, your definition of F(x) is very incomplete, you should have included the values of x for which the given rule applies. As it happens, I doubt very much that what you posted defines a valid cdf.
yes i have forgot; the interval is [250,1250]
I don't completely understand this:
g(x) = dF/dx.
What is dF in here? Do you mean the derivative? Can you solve for example above.
Of course it's the derivative. What else could it possibly be?Quote:
Originally Posted by Nforce
I have no intention of solving it. Surely you know how to find the derivative of a function.
ok, thank you.