BuyFind

Single Variable Calculus: Concepts...

4th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781337687805
BuyFind

Single Variable Calculus: Concepts...

4th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781337687805

Solutions

Chapter I, Problem 5E
To determine

To evaluate: The expression 12+7i¯ in the form of a+bi.

Expert Solution

Answer to Problem 5E

The value of the expression 12+7i¯ is 127i.

Explanation of Solution

Use the property of conjugates z+w¯=z¯+w¯ and zw¯=z¯w¯ to simplify the expression as follows.

12+7i¯=12¯+7i¯=12¯+7¯(i¯)=12+7(i)[i¯=i]=127i

Therefore, the value of the expression 12+7i¯ is 127i.

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