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course Mth 163

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_d宓_lnwxassignment #001

Your work has been received. Please scroll through the document to see any inserted notes (inserted at the appropriate place in the document, in boldface) and a note at the end. The note at the end of the file will confirm that the file has been reviewed; be sure to read that note. If there is no note at the end, notify the instructor through the Submit Work form, and include the date of the posting to your access page.

001. typewriter notation

qa initial problems

01-14-2008

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13:40:17

`q001. Explain the difference between x - 2 / x + 4 and (x - 2) / (x + 4). The evaluate each expression for x = 2.

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RESPONSE -->

confidence assessment: 3

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13:47:40

`q001. Explain the difference between x - 2 / x + 4 and (x - 2) / (x + 4). The evaluate each expression for x = 2.

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RESPONSE -->

confidence assessment: 3

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13:53:07

`q003. What is the numerator of the fraction in the expression x - 3 / [ (2x-5)^2 * 3x + 1 ] - 2 + 7x? What is the denominator? What do you get when you evaluate the expression for x = 2?

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RESPONSE -->

O.K. this is getting confusing, again.Order of operations is understood, but the order of how to do and ans these questions and in what box is confusing.

confidence assessment: 0

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14:59:02

`q004. Explain, step by step, how you evaluate the expression (x - 5) ^ 2x-1 + 3 / x-2 for x = 4.

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RESPONSE -->

(x-5)/\ 2x-1 +3/x-2 X=4

(4-5) /\ 2*4-1 + 3/4 -2

(-1)/\ 8-1 +3/4-2

1-1+3/4-2

1-1.75-2

.75-2

-1.25

When X=4, the expression is -1.25

When I double check this on my calculator, I get 1.75, which is different than what I got on my worked out ans.

confidence assessment: 1

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15:11:59

while students in other courses should understand the notation and should understand the more basic simplifications.

There is also a link to a page with pictures only, to provide the opportunity to translated standard notation into typewriter notation.

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RESPONSE -->

as I copy and pasted the link to more typewriter examples, I see how the notations differ. I also understand now how to operate the Q & A section and which box to put it in. I wish there had been directions as to which buttons to press when and what box to do when though... I found that very confusing.

self critique assessment: 2

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assignment #001

001. typewriter notation

qa initial problems

01-14-2008

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assignment #001

001. typewriter notation

qa initial problems

01-14-2008

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15:20:38

`q001. Explain the difference between x - 2 / x + 4 and (x - 2) / (x + 4). The evaluate each expression for x = 2.

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RESPONSE -->

The difference is the parenthesis. They make it two different problems wherethe first expression simply divides 2 by x, the second divides the full x-2 by x=4. The first expression with x=2 would equal 5 and the second one would be 0/6 or zero.

confidence assessment: 3

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15:26:14

`q002. Explain the difference between 2 ^ x + 4 and 2 ^ (x + 4). Then evaluate each expression for x = 2.

Note that a ^ b means to raise a to the b power. This process is called exponentiation, and the ^ symbol is used on most calculators, and in most computer algebra systems, to represent exponentiation.

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RESPONSE -->

2/\ x+4 is different than 2/\(x+4) because in the first expression, the two is raised to the x, where in the second one, the 2 is raised to all of (x+4) The first expression, when x=2, is 8 the second one, when x=2, is 64.

confidence assessment: 3

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15:47:30

`q003. What is the numerator of the fraction in the expression x - 3 / [ (2x-5)^2 * 3x + 1 ] - 2 + 7x? What is the denominator? What do you get when you evaluate the expression for x = 2?

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RESPONSE -->

Numerator is on top- 3

Denominator is on bottom- (2x-5)^2 * 3x + 1 ]

When x=2, the expression is

x - 3 / [ (2x-5)^2 * 3x + 1 ] - 2 + 7x

2-3/[[4-5]^2*6+1]-2+14

2-(3/7)-2+14

2-(3/7)+12

13 4/7

confidence assessment: 2

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15:59:33

`q004. Explain, step by step, how you evaluate the expression (x - 5) ^ 2x-1 + 3 / x-2 for x = 4.

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RESPONSE -->

(x - 5) ^ 2x-1 + 3 / x-2

1. x=4 so fill it in

[4-5]^8-1+3/4-2

2. order of operations bpemdas

-1^8-1+3/4-2

3. Multiply exponents

-1^8= 1

4. fill in

1-1+3/4 -2

5. Add

1-1 3/4-2

6. Subtract

-1.25

confidence assessment: 1

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16:01:24

`q005. At the link

http://www.vhcc.edu/dsmith/genInfo/introductory problems/typewriter_notation_examples_with_links.htm

(copy this path into the Address box of your Internet browser; alternatively use the path

http://vhmthphy.vhcc.edu/ > General Information > Startup and Orientation (either scroll to bottom of page or click on Links to Supplemental Sites) > typewriter notation examples

and you will find a page containing a number of additional exercises and/or examples of typewriter notation.Locate this site, click on a few of the links, and describe what you see there.

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RESPONSE -->

I see several examples of how to properly notate typewriter mode into written mode. It should help with figuring out the problems.

confidence assessment: 3

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Good work.

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Let me know if you have questions. &#