Chapter 14 Query

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course Mth 151

n/a

If your solution to stated problem does not match the given solution, you should self-critique per instructions at 

http://vhcc2.vhcc.edu/dsmith/geninfo/labrynth_created_fall_05/levl1_22/levl2_81/file3_259.htm

 

 

Your solution, attempt at solution.  If you are unable to attempt a solution, give a phrase-by-phrase interpretation of the problem along with a statement of what you do or do not understand about it. This response should be given, based on the work you did in completing the assignment, before you look at the given solution.

 

011.  `Query 11

 

 

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Question:  `qQuery  (previously 1.4.24)  1 raised to to any power is what?

 

YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

Your solution:  1... I keep wondering if there is a trick to this....

 

 

confidence rating #$&*: 3

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Given Solution: 

`a** The meaning is 1^2, 1^3, 1^4.  We take a power of the base. 

 

The result is always 1. **

 

 

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Self-critique (if necessary): N/A

 

 

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Self-critique Rating: 3

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Question:  `qQuery  (previously 1.4.30)  What can you say about the square root of a negative number?

What can you say about the square of a negative number?

 

YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

Your solution:  Nothing, or something odd because as far as I know you can't square anything to get a negative number.

 

 

confidence rating #$&*: 3

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Given Solution: 

`a** The square root of a negative will often give you an error (what can you square to get a negative, since any number squared is positive?), but on certain calculators it gives a complex number (actually two complex numbers).  These are not real numbers; for the purposes of this course there is no real square root of a negative number.

 

There is no real number that can be squared to give a negative.  If you square a negative number you get a negative times a negative, which is positive.  If you square a positive number you get a positive number.  So a negative number has no real square root. **

 

 

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Self-critique (if necessary): N/a

 

 

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Self-critique Rating: 3

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Question:  `qQuery  (previously 1.4.30)  What can you say about the square root of a negative number?

What can you say about the square of a negative number?

 

YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

Your solution:  Nothing, or something odd because as far as I know you can't square anything to get a negative number.

 

 

confidence rating #$&*: 3

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.............................................

Given Solution: 

`a** The square root of a negative will often give you an error (what can you square to get a negative, since any number squared is positive?), but on certain calculators it gives a complex number (actually two complex numbers).  These are not real numbers; for the purposes of this course there is no real square root of a negative number.

 

There is no real number that can be squared to give a negative.  If you square a negative number you get a negative times a negative, which is positive.  If you square a positive number you get a positive number.  So a negative number has no real square root. **

 

 

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Self-critique (if necessary): N/a

 

 

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Self-critique Rating: 3

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