sha0403
help me to sketch graph for this question..
f(x)=(2/3)x^3+(5/2)x^23x?



This Question is Closed

Goten77
Best Response
You've already chosen the best response.
1
using 1st 2nd derivative test? or just a basic out line? or how much detail we talking?

Goten77
Best Response
You've already chosen the best response.
1
XD i cant show work/answer until i kno how much of the graph u wanna kno *how accurate*

sha0403
Best Response
You've already chosen the best response.
0
i don't know because the question juz ask sketch the graph of f(x)

sha0403
Best Response
You've already chosen the best response.
0
i think it abt first derivative bcause the first quest is about to differentiate..

Goten77
Best Response
You've already chosen the best response.
1
k then

Goten77
Best Response
You've already chosen the best response.
1
dw:1355813735819:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355813846026:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355813889138:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355813967982:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355814013821:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355814046241:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355814112490:dw

Goten77
Best Response
You've already chosen the best response.
1
ya follow me?

sha0403
Best Response
You've already chosen the best response.
0
yes....

Goten77
Best Response
You've already chosen the best response.
1
k well domain is all reals...so is range
and y(3) = local max while
y(1/2)= local min according to the 1st der test

Goten77
Best Response
You've already chosen the best response.
1
um according to end behaviors we know that it starts in the bottom left quadrant and goes to the top right quadrant...

Goten77
Best Response
You've already chosen the best response.
1
the x andy intercepts.. well usually they dont ask for those but i can do those 2

Goten77
Best Response
You've already chosen the best response.
1
dw:1355814855667:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355814960639:dw

Goten77
Best Response
You've already chosen the best response.
1
dw:1355815097994:dw that gets rounded to 4.6 and 1

Goten77
Best Response
You've already chosen the best response.
1
but then 3 and 1/2 are pluged into original so we know those values of the original graph and where to graph....
f(3)=13.5
f(1/2)=.8

Goten77
Best Response
You've already chosen the best response.
1
now with all that i get something like this
dw:1355815442995:dw

Goten77
Best Response
You've already chosen the best response.
1
as for concavity... XD not sure if u want 2nd derivative test to but.... i can do if it its required

sha0403
Best Response
You've already chosen the best response.
0
oh no need..i think it juz want first derivative...thanks a lot ya...coz i get it now..

Goten77
Best Response
You've already chosen the best response.
1
hmm k thats all that matters... and i didnt even explain side steps XD....

sha0403
Best Response
You've already chosen the best response.
0
o its ok...i appreciate that...thanks..