im confused with the way an answer is given in reciprocal cm format the questions was:
The temperature measured at a distance is given by:
Find the temeparture gradient (i.e. the rate at which temperature decreases with distance) 10cm from the flame.
my answer was
, where t(emp), d(istance)
to 3 sf
but the book (Edexcel A level maths} gives the answer as
can someone please explain what the reciprocal cm is all about.