advertisement

Homework 4 Math 1100 Name: 1. (5 points) If f(x) = 8x — , compute 2 x 6 September, 2013 I(ey f’(x). f’i) —2.x 2. (5 points) If f(x) = 8x — , compute f’(3). 2 x —2(3) 3. (5 points) Find the equation of the line tangent to the graph of point (3,15). y-(S Z(x-3) f(x) = 8x — 2 at the x 4. (5 points) Suppose the height of a ball in feet after t seconds is given b h(t) \\That is the velocity of the ball after 3 seconds? ‘ = 8 — 5 f-i ‘2. 5. (5 points) Suppose the profit of a paint company is given by P(x) = 8x 2 where x . What is the marginal profit if three gallons of 2 is the number of gallons of paint sold paint are sold? — 1 1 Wt&-,I’ r° ci1lo1 ‘If the poor physics in this problem bothers you, imagine you are throwing balls on a planet with gravity of earth. 1f your business has this profit function, you should consider finding a new occupation. 2 the