Question

Identify the monomial function(s) that have a maximum.

y = x3


y = –4x


y = –3x4


y = –2x12


y = 3x3


y = 6x8

Answer 1

3rd and 4th on edg 2020

Explanation:

i took it

Answer 2

Explanation:

For a function f to have a maximum as per derivative rule we have to have

f'(x) =0, f"(x) <0

If second derivative =0 also then it is not maximum but point of inflections

Whenever f(x) = ax^n

we have

f'(x) = 0 gives x=0 and

f"(x) = n(n-1) ax ^(n-2)

So for n greater than or equal to there cannot be any maximum

And also for a straight line

y =-4x

y'=-4 and y"-0

No maximum

So only maximum can be for a funciton of the form y = ax^2

Here we do not have that all degrees are either 1 or greater than 1.

So no maximum for any funciton.