Respuesta :
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
f(a+h)-f(a)=3(a+h)+1-(3a+1)=
3a+3h+1-3a-1=
3h
result is 3h
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
f(a) = 3a + 1
f(a+h) - f(a) = 3a + 3h + 1 - 3a - 1 = 3h
Answer: 3h