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Mathematics 19 Online
OpenStudy (samiam):

Zarkon can u plz come help me?

OpenStudy (samiam):

OpenStudy (samiam):

ok this is the correct one

OpenStudy (zarkon):

i would use 0,1,2,3 for 1920,1930,1940,1950 that will make the numbers smaller

OpenStudy (zarkon):

then for 1960 you can evaluate your function at 4

OpenStudy (zarkon):

if you let \[f(x)=a+bx+cx^2+dx^3\] then solve the system \[f(0)=106\] \[f(1)=123\] \[f(2)=132\] \[f(3)=151\] for a,b,c,d

OpenStudy (zarkon):

I get 106,27,-13,3

OpenStudy (samiam):

right but i landed up with an inconsistent system

OpenStudy (zarkon):

I did not ;)

OpenStudy (samiam):

lol

OpenStudy (zarkon):

write out the full equations I wrote above

OpenStudy (samiam):

oh i may have gone wrong since i made my point sthe following

OpenStudy (samiam):

(0,106)(10,123)(20,132)(30,151) these r my points

OpenStudy (zarkon):

that would work too

OpenStudy (zarkon):

you will get a different polynomial ...but the same final answer

OpenStudy (samiam):

neways i think i will use ur values isnce they r easier to work with :D

OpenStudy (samiam):

shld i write out the equations? or the matrix?

OpenStudy (zarkon):

either

OpenStudy (samiam):

|dw:1326673243211:dw|

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