Question
What is the rate at which reciprocal of a number changes with respect to the number if the number is equal to 7? Let n be the number and r be the reciprocal of the number?
Answers
Reiny
r = 1/n
dr/dt = -n^2 dn/dt
when n = 7, r = 1/7
dr/dt = -49 dn/dt
we have missing information
dr/dt = -n^2 dn/dt
when n = 7, r = 1/7
dr/dt = -49 dn/dt
we have missing information
Anonymous
r = 1/n
dr/dn = -1/n^2
...
dr/dn = -1/n^2
...