A rectangular area adjacent to a river is to be fenced in; no fence is needed on the river side. The enclosed area is to be 1000 square feet. Fencing for the side parallel to the river is $5 per linear foot, and fencing for the other two sides is $8 per linear foot; the four corner posts are $25 apiece. Let x be the length of one of the sides perpendicular to the river. (a) Write a function C(x) that describes the cost of the project. (b) What is the domain of C? (c) Use a graphing utility to graph C = C(x) (d) Find the dimensions of the cheapest enclosure.
Minimization
In mathematics, traditional optimization problems are typically expressed in terms of minimization. When we talk about minimizing or maximizing a function, we refer to the maximum and minimum possible values of that function. This can be expressed in terms of global or local range. The definition of minimization in the thesaurus is the process of reducing something to a small amount, value, or position. Minimization (noun) is an instance of belittling or disparagement.
Maxima and Minima
The extreme points of a function are the maximum and the minimum points of the function. A maximum is attained when the function takes the maximum value and a minimum is attained when the function takes the minimum value.
Derivatives
A derivative means a change. Geometrically it can be represented as a line with some steepness. Imagine climbing a mountain which is very steep and 500 meters high. Is it easier to climb? Definitely not! Suppose walking on the road for 500 meters. Which one would be easier? Walking on the road would be much easier than climbing a mountain.
Concavity
In calculus, concavity is a descriptor of mathematics that tells about the shape of the graph. It is the parameter that helps to estimate the maximum and minimum value of any of the functions and the concave nature using the graphical method. We use the first derivative test and second derivative test to understand the concave behavior of the function.
A rectangular area adjacent to a river is
to be fenced in; no fence is needed on the river side. The
enclosed area is to be 1000 square feet. Fencing for the side
parallel to the river is $5 per linear foot, and fencing for
the other two sides is $8 per linear foot; the four corner
posts are $25 apiece. Let x be the length of one of the sides
perpendicular to the river.
(a) Write a function C(x) that describes the cost of the
project.
(b) What is the domain of C?
(c) Use a graphing utility to graph C = C(x)
(d) Find the dimensions of the cheapest enclosure.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
