"Fredie" <[Only registered users see links. ].uk> wrote in message news:bspule$f7k$[Only registered users see links. ].pol.co.uk...
I do not understand your complaint
Posters on these groups have a wide range of
training, experience, and ability and also vary greatly
in their motives for posting. Some are just curious,
some want their homework done for them, and
many are just crackpots.
It is therefore difficult to pitch the level of a reply
to suit all posters. In the case of homework, I am
sure you will agree that a gentle hint is ultimately
much more useful than just providing the answer.
In any case, DaveC's final comments were:
'Exactly what i was looking for (but didn't see...).
Thanks, Steven, and others'.
You obviously have not been lurking here for
long, Dave was lucky not to get a reply from
Finally, it is normal to post your response after
the text to which it refers as I have done. So
called 'top posting' is not encouraged.
|As it happens I have been lurking here for many months.
I would have siad that the 1/6 appearing out the fonrt of the formula,
whilst inherently simple, would cause many of my students difficulty - even
saying "Now substitue in for r and then simplify" would have helped. I don't
think year12/13 are very good at doing cubes intheir heads!