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1st derivative test?

do first derivative test?

k thats right now factor it

|dw:1358134355078:dw|

part b is 2nd derivative test

|dw:1358134818974:dw|

for part a.) is it (-infinity,-1) & (1,infinity)

yes

ok for part b.) i got x=0, and \[\pm \frac{ \sqrt{2} }{ 2 }\]

|dw:1358135080380:dw|

|dw:1358135162509:dw| hmm you number works to...

then i do the SDT? (Second Derivative Test)?

well there the same i meant XD

yes now you test those numbers between/around them

ok, how do i do part c.)? o:

i told u part c

so um heres part b|dw:1358135773604:dw|

hmm the squareroot number is very small....

for b.) did u get \[(\frac{ \sqrt{2} }{ 2 }, \infty)\]

oh i keep on thinking about point of inflection <.<

|dw:1358128938034:dw|
o.O

is that drawing seem right? :\

|dw:1358136164439:dw|

yes your right... its only concave up on that last interval

:"D

so how do i do part c.) again sorry..

wait so my part b.)was wrong?

so heres what the graph looks like
|dw:1358136607164:dw|

aah i meant to say for part (c)

k everything is right now.... i just got part letters mixed up

so how do ido part c.)

......u kno what i meant... that entre paragraph just now is part C

ah ok ty so for part c.) i got y=-2x+2

no i gave u part 2

part c*

yeah it says write the equation

ill explain it again

ohso my answer waswrong x-x

okty :P

sure