Question

Use the function f(x) = 2x3 - 3x2 + 7 to complete the exercises.

f(−1) =
f(1) =
f(2) =

Answer 1

the correct answer is;

2

6

11

Answer 2

The value of the function f(x) at
`x=a` can be determined by substituting a instead of x into the function expression.

1. When x=-1, then

`f(-1)=2\cdot (-1)^3-3\cdot (-1)^2+7=-2-3+7=2.`

2. When x=1, then

`f(1)=2\cdot 1^3-3\cdot 1^2+7=2-3+7=6.`

3. When x=2, then

`f(-1)=2\cdot 2^3-3\cdot 2^2+7=16-12+7=11.`