Question

If, f(x)=12x-2
Then, f(a+h)-f(x)/h =?

Answer 1

did you mean
f(x+h) -f(x)

or
f(a+h)-f(a)

Answer 2

the second one

Answer 3

to get f(a+h)
just replace x in f(x) by 'a+h'

Answer 4

yea i tried working this problem like 4 different ways but all the answers were wrong. idk what im doing wrong

Answer 5

what did u get as f(a+h) as ?

Answer 6

12a+12h-2

Answer 7

so i got 12a+12h-2-12x+2/h

Answer 8

but f(a) would be 12a +2
right ?

Answer 9

f(a) = 12 a-2 **

Answer 10

no because
(12a+12h-2)-(12x-2)

Answer 11

and its x not a. and i think thats whats confusing me

Answer 12

its f(a+h) - f(a)
and not
f(a+h)- f(x)

Answer 13

oh wait it is f(a+h)-f(a)

Answer 14

would that change x to a in 12x-2?

Answer 15

yes

to get f(a), we replace 'x' in f(x) by a

Answer 16

so its 12a-2

Answer 17

yes

Answer 18

okay i got the answer, thank you :)

Answer 19

welcome ^_^