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Please don't use my name in vain. And chem calculations are not that bad. They're pretty fun.

Oh and when testing for inflexion points make sure you but like some statement under your table. For instance, since there is a change in concavity, there is an inflexion point at (x,y).

Where can i get my hands on these books?

Understanding > Memorising.

Oh and yes. Probability. I can't even do perms and combs properly for 3U.. Derno how im gonna cope with 4U probability =(

I havn't finished all the 4U course. But graphs looks fun =D

Phew....

Does this concern to the 2012 4U students?

Maybe an accelerated student.

Fitzpatrick for 2U is good

If there is a change in concavity. You can use the table of values.

You should thank me. Atleast 3/4 of your views are from me :D

I laughed so hard at this. I hope Alkanes is not watching. His third phrase made me roll on the floor. Ninja'ed. Derno what was funny m8.

I inCIS to do the next question..

HAHAAH good one. Argument too.

zzzzz

Omg spi hate you!!!!!

Ok i am going to try and beat spiral flex to this. y = xe^x Using product rule to differentiate y' = e^x + xe^x = e^x(1+x) At S.P y' = 0 Therefore x = -1 Using the table of values to determine the nature. The curve should be a minimum turning point at (-1,-1/e) 2. Expand it out 2xe^x +...

lez be honest

Enlighten me.