hmmmm a smooth change would imply a linear relationship between H and time. I was able to approximate the answer for H increasing from 70 to 80 over 4 billion years by dividing the problem into 4 separate time sequences and using and average H for each billion year segment and adding up the...
it worked i have a basic grasp of it now thanks the correlary question is a bit harder however, how would the same calculation be done if the Hubble constant changes over time, for instance how would the differential equation look for the same problem but where the Hubble constant...
It's starting to make some sense in that it involves e, yes!, however e ^(ht) is unitless, so I am not sure what value to assign for B to give it a distance unit. Let me give an example and perhaps you could show me how you would use Be^(ht) + C to solve it. Thanks in advance.
If two...
yikes can you help me get started on this differential equation? I understand the basic concept of derivative and integrals ( only took calc 1 and 2 20 years ago ) but am still not sure how to solve for D(t) thanks again! i never took diff eq. would appreciate anyones help.
I'm working on a problem that has me baffled mathematically. What equation can I use to calculate the future distance between two galaxies not gravitationally bound receding at a Hubble constant of 70km/sec/Mpc as a function of time. Stated in another way, if two distant galaxies start off...