Tuesday, December 13, 2016

Term 2, Turn In #8 Discussion

Turn in #8 is due Thursday, Dec. 22, 2016!

This is for discussing assignments from WEEKS 3-4, including homework, turn-in #8, in-class work or lessons, or anything else related to the class from these weeks.  Please be sure to include your name at the end of your post for credit.  When answering a question, DO NOT GIVE SOLUTIONS! Provide hints or explain a method that you used, but do not give the final result.  As always, RESPECT IS A MUST! Anyone abusing this forum will be banned from future use (meaning, no extra credit!!!)

19 comments:

  1. On the Partial Fractions HW worksheet, #8 on the answer sheet has the -1 over the (x+4) and the 1 with the (x-1) but I don't understand why these are flipped because when you cover the (x+4) and put -4 into the other part of the expression, you get -1 and shouldn't that go over the (x+4) then because that's the part that was covered?

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    1. Oops the answer sheet has 1 over the (x+4) and -1 over the (x-1), but I'm getting that the -1 should go over the (x+4) and the 1 over (x-1)

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  2. On pg.312 #57c I keep getting k=48 when it's supposed to be 16, what equation do I use to solve for K?

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    Replies
    1. Plug in the initial condition immediately after taking the integral.

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  3. How can I figure out where the graph is both decreasing and concave up? (1b)

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    Replies
    1. Find where the first derivative is negative AND where the second dervative is positive. Pay close attention to the wording of the question.

      - Jacob Edelson

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  4. I'm confused of how to draw the solution curve of slope fields...I can't tell the pattern of the field based on my sketches. Any tips? Question 4a

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    1. Start at the initial point and draw a short segment parallel to the slope at that point. Once you arrive at the next "tick" adjust your slope accordingly.

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    2. If you do part b of that problem and solve for the equation it ends up giving you an equation that can be used for part a.
      - Andrew Saad

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  5. for 2c do we need to solve for c?
    - Andrew Saad

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    Replies
    1. I think so because it tells you to use the given initial value and you wouldn't need that for 2c unless solving for c for h(x)

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  6. Does 3b need an actual explanation to go with the question?

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    Replies
    1. Not necessarily, you could provide an inequality that describes the region in the x-y plane.

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  7. How do you know if the answer to 4c is positive or negative?

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  8. On the turn in #1c is C a plynomial?

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    Replies
    1. It would be a polynomial if it contained multiple terms, sometimes raised to different powers, and is continuous always.

      Matt Bachand

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  9. On the turn in p.312 #57, do you solve for h and then put h back into the original equation we were given?

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  10. on 312 #57, can we solve with related rates?

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