Explanation In order to find whether substraction is associative or not, it is enough to check the equality of the expression ( a − b ) − c = a − ( b − c ) . The expression ( a − b ) − c can be simplified as follows. ( a − b ) − c = a − b − c [ Remove the parentheses ] The expression a − ( b − c ) can be simplified as follows. a − ( b − c ) = a − b + c [ Remove the parentheses ] From the above simplification, ( a − b ) − c ≠ a − ( b − c ) . That is, substraction is not associative. For example, consider the expression ( 3 − 2 ) − 1 = 3 − ( 2 − 1 ) and check the equality of the expression as follows

11th Edition

ISBN: 9780134437705

Author: Washington

Publisher: PEARSON

See similar textbooks

Concept explainers

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.

Videos

Question

Chapter 1.7, Problem 60E

To determine

Whether substraction associative by explaining whether the equality (a−b)−c=a−(b−c) holds or not.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 1.7, Problem 59E

Chapter 1.8, Problem 1PE

Students have asked these similar questions

(b) In various places in this module, data on the silver content of coins minted in the reign of the twelfth-century Byzantine king Manuel I Comnenus have been considered. The full dataset is in the Minitab file coins.mwx. The dataset includes, among others, the values of the silver content of nine coins from the first coinage (variable Coin1) and seven from the fourth coinage (variable Coin4) which was produced a number of years later. (For the purposes of this question, you can ignore the variables Coin2 and Coin3.) In particular, in Activity 8 and Exercise 2 of Computer Book B, it was argued that the silver contents in both the first and the fourth coinages can be assumed to be normally distributed. The question of interest is whether there were differences in the silver content of coins minted early and late in Manuel’s reign. You are about to investigate this question using a two-sample t-interval. (i) Using Minitab, find either the sample standard deviations of the two variables…

5. (a) State the Residue Theorem. Your answer should include all the conditions required for the theorem to hold. (4 marks) (b) Let y be the square contour with vertices at -3, -3i, 3 and 3i, described in the anti-clockwise direction. Evaluate に dz. You must check all of the conditions of any results that you use. (5 marks) (c) Evaluate L You must check all of the conditions of any results that you use. ཙ x sin(Tx) x²+2x+5 da. (11 marks)

3. (a) Lety: [a, b] C be a contour. Let L(y) denote the length of y. Give a formula for L(y). (1 mark) (b) Let UCC be open. Let f: U→C be continuous. Let y: [a,b] → U be a contour. Suppose there exists a finite real number M such that |f(z)| < M for all z in the image of y. Prove that < ||, f(z)dz| ≤ ML(y). (3 marks) (c) State and prove Liouville's theorem. You may use Cauchy's integral formula without proof. (d) Let R0. Let w € C. Let (10 marks) U = { z Є C : | z − w| < R} . Let f UC be a holomorphic function such that 0 < |ƒ(w)| < |f(z)| for all z Є U. Show, using the local maximum modulus principle, that f is constant. (6 marks)

Chapter 1 Solutions

Basic Technical Mathematics

Ch. 1.1 - |4.2| = ?Ch. 1.1 - |34|=?Ch. 1.1 - Place the correct sign of inequality ( or )...Ch. 1.1 - Place the correct sign of inequality ( or )...Ch. 1.1 - Prob. 5PE Ch. 1.1 - In Exercises 14, make the given changes in the...Ch. 1.1 - In Exercises 14, make the given changes in the...Ch. 1.1 - In Exercises 14, make the given changes in the...Ch. 1.1 - In Exercises 14, make the given changes in the...Ch. 1.1 - In Exercises 58, designate each of the given...

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.

Whether substraction associative by explaining whether the equality ( a − b ) − c = a − ( b − c ) holds or not.

Concept explainers

Videos

Whether substraction associative by explaining whether the equality (a−b)−c=a−(b−c) holds or not.

Want to see the full answer?

Chapter 1 Solutions