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20 February, 04:08

If f (x) = 3x + 1, then f (a + h) - f (a) =

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Answers (2)
  1. 20 February, 04:13
    0
    Replace x with a+h and a

    f (a+h) - f (a) = 3 (a+h) + 1 - (3a+1) =

    3a+3h+1-3a-1=

    3h

    result is 3h
  2. 20 February, 04:19
    0
    F (a+h) = 3 (a+h) + 1 = 3a + 3h + 1

    f (a) = 3a + 1

    f (a+h) - f (a) = 3a + 3h + 1 - 3a - 1 = 3h

    Answer: 3h
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