Brief Calculus
posted by Jazmin (please help) on .
Calculate the average rate of change of the given function over the given interval. Where appropriate, specify the units of measurement.
f(x) = 1/x;[2, 7]
I used the f(b)f(a)/ba and I got .071 and it said I was wrong could you please help me find my error?
WROK:
y1= 1/x (put this for my yvalue in my calculator
then (y1(7)y1(2))/(72) which equals .071

f(2) = 1/2
f(7) = 1/7
avg rate of change = (1/7  1/2)/(72)
= (5/14)/5)
= 1/14
don't go with decimals, they are not accurate,
stay with fractions for exact answers. 
thank you apparently that is all I had to do=)