pottersheep
Grade 12 Advanced Functions help please!
Use the degree and the sign of the leading coefficient to determine the value of the constant finite differences.
f(x) = -4x^3 +2x^2 - x +5
Delete
Share
This Question is Closed
pottersheep
Best Response
You've already chosen the best response.
0
How do I do that? I know the degree is 3, and the sign is negative...
Thanks!
niravshah08
Best Response
You've already chosen the best response.
0
I don't know what constant finite diff. Is but i think it will be -2x. I got this by dividing the first term by the second term
pottersheep
Best Response
You've already chosen the best response.
0
no that's not the answer but thanks anyways
pottersheep
Best Response
You've already chosen the best response.
0
Does anyone else know?
hal_stirrup
Best Response
You've already chosen the best response.
1
using calculas .
hal_stirrup
Best Response
You've already chosen the best response.
1
is that ok?
CliffSedge
Best Response
You've already chosen the best response.
0
It can be done without calculus.
hal_stirrup
Best Response
You've already chosen the best response.
1
sure
hal_stirrup
Best Response
You've already chosen the best response.
1
You can make a long table of values
CliffSedge
Best Response
You've already chosen the best response.
0
I think a short-cut is to multiply the leading coefficient by twice the degree.
CliffSedge
Best Response
You've already chosen the best response.
0
It works for this example and another that I tried, but it might not work in all cases.
hal_stirrup
Best Response
You've already chosen the best response.
1
-4x3x2x1
hal_stirrup
Best Response
You've already chosen the best response.
1
Since the degree of the function is 3 . we look at -4x^3
hal_stirrup
Best Response
You've already chosen the best response.
1
the 3th diferences are constant.
pottersheep
Best Response
You've already chosen the best response.
0
Thanks ~ I haven't taken calculus yet so I just had to make really long tables for all of my questions. I got the right answers tho! :)