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course Mth 271

????????r??p???~??assignment #001

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001. Only assignment: prelim asst

qa prelim

??w??+?j??xU???assignment #001

001. typewriter notation

qa initial problems

08-29-2007

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assignment #001

001. typewriter notation

qa initial problems

08-29-2007

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22:34:23

`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 -->

parenthesis

confidence assessment: 2

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22:36:02

2 ^ x + 4 indicates that you are to raise 2 to the x power before adding the 4.

2 ^ (x + 4) indicates that you are to first evaluate x + 4, then raise 2 to this power.

If x = 2, then

2 ^ x + 4 = 2 ^ 2 + 4 = 2 * 2 + 4 = 4 + 4 = 8.

and

2 ^ (x + 4) = 2 ^ (2 + 4) = 2 ^ 6 = 2*2*2*2*2*2 = 64.

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RESPONSE -->

self critique assessment: 3

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22:40:02

`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 = x-3

denominator = [ [2x-5]^2 * 3x + 1] -2 + 7x

solution = -0.05263

confidence assessment: 2

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22:41:07

`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 -->

confidence assessment: 3

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&#To run the program correctly you click on the Next Question/Solution button (top left), enter your response in the Answer box (the box at top right), click on the Enter Response button (above the top right box), then again on the Next Question/Solution botton (top left) to see the solution, and finally enter your response or self-critique in the Answer box and click on Enter Response.
You then start the process over with the next question, clicking on the Next Question/Solution button at top left, etc.

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You should run this program again, and be sure to self-critique your work.