Question

### Gauthmathier8909

Grade 12 · 2020-11-04

For all x, let the function f be defined by f(x)=-\dfrac{1}{a}\left( \dfrac{1}{x}+h\right)^{2}-k, where a, h, and k are constants. If a and k are positive, which of the following CANNOT be true? （ ）

Good Question (417)

Answer

4.7(321) votes

### Gauthmathier3386

Grade 12 · 2020-11-04

Answer

A

Explanation

**A is the correct answer.**-x cannot be 0, since this results in a divide-by-zero term.

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