anonymous
  • anonymous
Graph the function f(x) = − x4 + 7x3 − 9x2 − 3x + 10 using graphing technology and identify for which values of x the graph is decreasing.
Mathematics
jamiebookeater
  • jamiebookeater
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DanJS
  • DanJS
did you graph the thing ?
DanJS
  • DanJS
anonymous
  • anonymous
I have no idea how.

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DanJS
  • DanJS
It says to use a computer. Look where the function has tangent lines with negative slopes...
anonymous
  • anonymous
ok so would it be x=0 and x=1?
DanJS
  • DanJS
Those are two points that are on a decreasing part of the function.... they are loooking for the entire interval(s)
anonymous
  • anonymous
I don't uunderstand
DanJS
  • DanJS
For instance, the function is decreasing for x, when -0.14 < X < 1.28
anonymous
  • anonymous
ok. I see, I see.
DanJS
  • DanJS
Is this for calculus 1 or algebra
anonymous
  • anonymous
Thank you:) Can describe the end behavior of f(x) = 3x32 + 8x2 − 22x + 43.
anonymous
  • anonymous
calulus 1
anonymous
  • anonymous
Planning to take AP Cal BC next year
anonymous
  • anonymous
describe the end behavior of f(x) = 3x32 + 8x2 − 22x + 43.
anonymous
  • anonymous
is the answer up on the left, and down on the right?
DanJS
  • DanJS
ok, have you done the first derivative test for increasing/decreasing intervals
anonymous
  • anonymous
No. Not yet
anonymous
  • anonymous
i'm doing it at BC and my teacher has no idea what she's doing.
DanJS
  • DanJS
http://www.wolframalpha.com/input/?i=+3x^4%2B8x^2-22x%2B43

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