## magepker728 3 years ago how would you solve this

1. magepker728

|dw:1349555414557:dw|

2. Decart

a=x

3. magepker728

how and why

4. Decart

this is an old eqaution from Issac Newton

5. zzr0ck3r

((7-3(x+h)) - (7-3x))/h

6. magepker728

@zzr0ck3r you replace 7-3x with f(a) why is that?

7. zzr0ck3r

take f(x) and put in a+h for x f(a+h) = 7-3(a+h) then subtract f(a) from all that (7-3(a+h) - (7-3a)) then put that all over h (7-3(a+h) - (7-3a)) /h

8. Decart

This is called the differance quotient

9. Decart

$\frac{ f(x+h)-f(x) }{ h }$

10. zzr0ck3r

I dont think the name and its history is helping him much, as im sure they told him that in class.

11. Decart

you substitute 7-3x for all x values

12. magepker728

well thanks everyone...

13. zzr0ck3r

no, this is not what you do....

14. zzr0ck3r

Please stop @Decart you are saying many wrong things

15. zzr0ck3r

(7-3a-3h-(7-3a))/h

16. Decart
17. Fgcbear16

I'm with @zzr0ck3r. you didn't distribute your h @Decart

18. Decart

you are correct i did not srry

19. Decart

I had to refer to my precalculus text book it had been some time since I had this

20. Decart

$\frac{ 7-3(a+h)-(7-3a) }{ h }$