Question

How do you find `w(-1)` given `w(x)=x^3-2`?

Answer 1

`w(-1)=-3`

Explanation:

`w(x)=x^3-2` means `w` is a function of `x`. To find the value of `w(x)` at any given value of `x`, we just substitute `x` in the function. Hence

`w(-1)=(-1)^3-2`

= `-1-2`

= `-3`