We will have an absolute maximum (or minimum) at provided f(c) is the largest (or smallest) value that the function will ever take on the domain that we are working on. Also, when we say the âdomain we are working onâ this simply means the range of xâs that we have chosen to work with for a given problem.
Thompson's slope is about one percent, so each structure manages a zone of about nine acres. At $500 to $2,000 per structure, the drainage water management structures only added about five to 15 percent to the cost of upgrading the field's century-old drainage system.t $500 to $2,000 per structure, the drainage water management structures only added about five to 15 percent to the cost of upgrading the field's century-old drainage system.
Professional Insallation. Having an outdoor drain tile installed by a landscaper or other professional can cost as low as $10 to $30 a foot. However, the cost averages about $25 per foot depending on the depth and width of the drain.For example, a drain tile that's 30 feet to 50 feet long may cost about $750 to over $1,500. drain tile can direct excess water into an open area, but you might need a dry well to hold the water until it gradually filters into the surrounding soil. A do-it-yourself dry well can cost as little as $5 to as much as $400, but having one professionally installed costs $300 to over $5,000.