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B How to find out various sine values from its graph.

  1. Jun 14, 2016 #1
    Question (and Answer):

    XtPLM.jpg
    The answer is written in thin black, inc = increasing, dec = decreasing. Am I wrong anywhere?

    Thanks!
     
  2. jcsd
  3. Jun 14, 2016 #2
    I would quibble over pi/2 and 3pi/2. In both of those cases the value of sin(x)neither increases nor decreases as x increases .
     
  4. Jun 14, 2016 #3

    mfb

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    2016 Award

    Staff: Mentor

    Same here. Everything else is correct.
     
  5. Jun 14, 2016 #4
    Yeah, I also spent more time on those than others. I can see that the derivative there would be a horizontal straight line. Fine, thank you! :smile:
     
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