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

asked May 17, 2017 10.2k views

1 vote

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4 votes

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

Gunnit answered May 19, 2017

8.1k points

4 votes

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

Noby Fujioka answered May 23, 2017

7.9k points

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