192k views
3 votes
Having A really hard time and my Professor is being a A Hole with help so can someone just solve it for me I need the range and the graph.​

Having A really hard time and my Professor is being a A Hole with help so can someone-example-1

1 Answer

5 votes

Normally, when
x=3 the function


f(x)=\frac12(x-1)^3-1

takes on a value of


f(3)=\frac12(3-1)^3-1=\frac82-1=4-1=3

so the graph of
f(x) passes through the point (3, 3). This is the only place at which the cubic takes on a value of 3, since
f(x) is one-to-one.

In the definition of
q(x), however, we remove this point from the curve and replace with the point (3, -2).

While
f(x) is a standard cubic function, so that its range is all real numbers, the replacement made for
q(x) removes 3 from the range set, so that the range of
q(x) would be all real numbers *except* 3.

User Fdsaas
by
4.5k points