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knowlewj01

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## Homework Statement

The uncertainty [tex]\Delta[/tex]M in the absolute magnitude for a given spectral type could be 0.25 magnitude. while the uncertainty in the apparent magnitude magnitude m, can be negligable. Give an indication of the relative uncertainty in the derived distance.

## Homework Equations

m - M = 5 log(d) - 5

## The Attempt at a Solution

I have no idea how i am going to do this, I thought that maybe rearranging to get d as the subject might be a good starting point, so:

d = 10^[[tex]\frac{m-M+5}{5}[/tex]]

now maybe use a bit of quadrature?

([tex]\Delta[/tex]d)^2 = [tex]\sqrt{((dd/dM)\Delta M)^2}[/tex]Anyone think they can push me in the right direction? I have a feeling that I'm doing this all wrong.

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