Use Mathematical Induction to Prove the Following $$\text { If } a \text { is } a \text { constant and } 0 < a < 1 \text {, then } a ^ { n } < a ^ { n - 1 } \text {. }$$

Use mathematical induction to prove the following.
- $$\text { If } a \text { is } a \text { constant and } 0 < a < 1 \text {, then } a ^ { n } < a ^ { n - 1 } \text {. }$$