TAILIEUCHUNG - Basic Mathematics for Economists - Rosser - Chapter 3

3 Introduction to algebra Construct algebraic expressions for economic concepts involving unknown values. Simplify and reformulate basic algebraic expressions. Solve single linear equations with one unknown variable. Use the summation sign . Perform basic mathematical operations on algebraic expressions that involve inequality signs. | 3 Introduction to algebra Learning objectives After completing this chapter students should be able to Construct algebraic expressions for economic concepts involving unknown values. Simplify and reformulate basic algebraic expressions. Solve single linear equations with one unknown variable. Use the summation sign S. Perform basic mathematical operations on algebraic expressions that involve inequality signs. Representation Algebra is basically a system of shorthand. Symbols are used to represent concepts and variables that are capable of taking different values. For example suppose that a biscuit manufacturer uses the following ingredients for each packet of biscuits produced kg of flour kg of sugar and kg of butter. One way that we could specify the total amount of flour used is kg times the number of packets of biscuits produced . However it is much simpler if we let the letter q represent the number of packets of biscuits produced. The amount of flour required in kilograms will then be times q which we write as . Thus we can also say amount of sugar required kilograms amount of butter required kilograms Sometimes an algebraic expression will have several terms in it with different algebraic symbols representing the unknown quantities of different variables. Consider the total expenditure on inputs by the firm in the example above. Let the price in per kilogram of flour be denoted by the letter a. The total cost of the amount of flour the firm uses will therefore be times a written as . If the price per kilogram of sugar is denoted by the letter b and the price per kilogram of butter is c then the total expenditure in on inputs for biscuit production will be 1993 2003 Mike Rosser When two algebraic symbols are multiplied together it does not matter in which order they are written . xy yx. This of course is the same rule that applies when multiplying numbers. For example 5 x 7 7 x 5 Any .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.