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Exponential function and Geometric progression

  1. Oct 5, 2011 #1
    Can anyone help me answer this question?


    " Every exponential function is a geometric progression but not every geometric progression is an exponential function. Explain."
     
  2. jcsd
  3. Oct 5, 2011 #2
    It would be nice if you had some ideas you tried but couldn't get to work in your head.

    Think of it this way:
    Every human is a mammal, but not all mammals are humans.

    Basically, I just changed the objects, but the principle is the same. What does it imply if every human is a mammal? What does it imply if not all mammals are humans?
     
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