im sorry, its (1/2)X.
Does this change anything?
also along those same lines, there's another part to the question which is exactly the same as above but its:
let X have a exp(lambda) distribution...determine the distribution function of (lambda)X and what kind of distribution does this have?
Homework Statement
Let X have an Exp(1/2) distribution. Determine the distribution function of 1/2X. What kind of distribution does 1/2X have?
The Attempt at a Solution
I can't seem to do this quite properly. I thought of doing the integral from x to -inf of 1/2X dx but that doesn't...
1. a 1400 kg car with a cross section of 1.8m wide and 1.46m high slides across a frictionless surface at 19 m/s.
The question is how long does it take (in seconds) to get to 13 m/s?
the 2nd part is how long it does it take to get to 10 m/s?
2. D = .5(A)v^2 where A is the area of cross...