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Concept explainers
(a)
To find
(a)
![Check Mark](/static/check-mark.png)
Answer to Problem 110E
Explanation of Solution
Using the following facts-
The given complex number is
Its conjugate is
Now,
The multiplication rule for
The rule states that if and
then the product of the two complex numbers will be given by
In other words, the moduli get multiplied and the arguments get added.
Multiplying the moduli and adding the arguments in our expression as follows-
(b)
To find
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 110E
Explanation of Solution
The value to find is
The
The rule states that if and
then the quotient of the two complex numbers will be given by
In other words, the moduli get divided and the arguments get subtracted.
Dividing the moduli and adding the arguments in our expression as follows-
Chapter 6 Solutions
Precalculus with Limits
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- A tank initially contains 50 gal of pure water. Brine containing 3 lb of salt per gallon enters the tank at 2 gal/min, and the (perfectly mixed) solution leaves the tank at 3 gal/min. Thus, the tank is empty after exactly 50 min. (a) Find the amount of salt in the tank after t minutes. (b) What is the maximum amount of salt ever in the tank?arrow_forwardpleasd dont use chat gptarrow_forwardBy using the numbers -5;-3,-0,1;6 and 8 once, find 30arrow_forward
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