Posted by Jake on Sunday, March 4, 2012 at 3:19pm.
The fuel efficiency, E, in litres per 100 km, for a car driven at speed v, in km/h is E(v)=1600v/(v^2+6400).
a) Determine the legal speed speed that will maximize the fuel efficiency if the speed limit is 50 km/h.
The answer is 50 km/h but my teacher said it can't be that. Any explain please.

b) Determine the speed intervals, within the legal speed limit of 0 km/h to 100 km/h, in which the fuel efficiency is increasing.

Calculus  Anonymous, Friday, November 18, 2016 at 11:46am
021321
Answer This Question
Related Questions
 Calculus  The fuel efficiency, E, in litres per 100 km, for a car driven at ...
 Calculus  The fuel efficiency, E, in litres per 100 km, for a car driven at ...
 math  The fuel efficiency for a certain midsize car is given by E(v)= 0.016v^2...
 algebra  The fuel efficiency for a certain midsize car is given by E(v)= 0....
 math  a car travels at a constants speed and uses G(x) litres of gas per ...
 Algebra  The fuel efficiency for a certain midsize car is given by E(v) = &#...
 algera  The fuel efficiency for a certain midsize car is given by E(v) = −...
 Algebra  The fuel efficiency for a certain midsize car is given by E(v) = &#...
 Rational Functions Word Problem  A car travels at a constant speed and burns g(...
 Math  Advanced Functions  the function f(x)=0.005x^2+0.8x+12 models the ...
More Related Questions