Question

need help with problem

Answer 1

post it

Answer 2

err you need help but you want us to help or not?

Answer 3

my server was out for little bit, sorry!

Answer 4

:D this site is really harms the machine -.-'

Answer 5

that for sure, lol

Answer 6

it looks like differential o.O

Answer 7

yep!

Answer 8

i cant bring up your diagram for some reason

Answer 9

what version of windows do you have?

Answer 10

ta just put your screen shot to paint and save it as .jpg file then there won't be any problem

Answer 11

this is a lot easier than it looks at first glance, especially if you know how to take derivatives quickly. do you?

Answer 12

yes!

Answer 13

good then the derivaitive from the left is -1 and the derivative from the right is
\[\frac{1}{(7-x)^2}\]

Answer 14

clear what i did right? for the left i used
\[f(x)=7-x\] and from the right i used
\[f(x)=\frac{1}{7-x}\]

Answer 15

to get the two derivatives. then replace x by 6
derivative from the left is a constant. it is -1
when you replace x by 6 in the second expression you get 1

Answer 16

yes!

Answer 17

it only looked hard

Answer 18

ok, so does f' (6) exists, if does how would you find its values

Answer 19

clearly not since
\[1\neq -1\]

Answer 20

oh ok, so if they both had the same solution then, they would exists

Answer 21

true?

Answer 22

oh yes sorry. if the limits are the same then it exists and if not then no