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Functions and properties

  1. Oct 19, 2011 #1
    Hey all..so Ill go ahead and say that I recently discovered passion for math..I didnt really learn too much in highschool

    when graphin y=-f(x)
    -how would I input on ti83?

    how do y=2f(x) differ from y=f(2x)
    -when it comes to input and output..how would the outputs differ? Im basically lost in the "how to" for the output

    ty!
     
  2. jcsd
  3. Oct 19, 2011 #2
    Why not trying with an example ?

    case f(x) = x^3 (cubic function)

    try x=5 :
    2f(x) = 2 (5^3) = 2(125) = 250
    f(2x) = f(10) = 10^3 =1000
    So 2f(x) differ from f(2x)

    or try x=1 :
    2f(x) = 2 (1^3) = 2
    f(2x) = 2^3 = 8
     
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