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    Can someone explain to me why f(2x) and f(x+a) do the opposite of what they should (i.e. move a to the right, or increase by 2)
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    (Original post by drmitz)
    Can someone explain to me why f(2x) and f(x+a) do the opposite of what they should (i.e. move a to the right, or increase by 2)
    f(x+a) refers to a movement, e.g. move to left/right in x-direction
    f(2x) refers to a stretch in the actual graph shape, is it stretched by a scale factor of 2.

    I`d suggest having a look at these:
    https://dcf72006bbf6ac449a748da8c149...on%20Notes.pdf
    (PAGE 9)

    http://www.examsolutions.net/maths-r.../C1/module.php

    The following site has question banks on topics and solution banks with detailed step by step working out:
    http://www.physicsandmathstutor.com/...ions-by-topic/

    Hope that helps!
 
 
 
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