Question

help with this question

Answer 1

concave up and down refers to the 2nd derivative of a function

Answer 2

And is shown always with some curvature I believe.

Answer 3

so how can i figure out the interval from this graph?

Answer 4

first, you need to know the point of inflection

Answer 5

without the "curve" you can still identify the point of inflection indirectly
but in just the case of concativity, you just need to know when graph of
y = f (x) is concave upward on those intervals where y = f "(x) > 0
y = f (x) is concave downward on those intervals where y = f "(x) < 0
If the graph of y = f (x) has a point of inflection then y = f "(x) = 0

Answer 6

you can always reverse the process to figure out the original family of function in question

Answer 7

so for this one it is x<2?

Answer 8

why less than 2?

Answer 9

oh no no its x>2