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Approximate when the function is positive, negative, increasing, or decreasing.
-x4 + 8x² +9
Ay
y =
-2
20
X
The function is positive:
decreasing:
increasing:
:: -3 and
::x>3
all real numbers
negative:
#
::
and
x < -2 :: 0 -2 and
#x>2
&
I
SO+

Approximate When The Function Is Positive Negative Increasing Or Decreasing X4 8x 9 Ay Y 2 20 X The Function Is Positive Decreasing Increasing 3 And Xgt3 All Re class=

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