# Question #b809d

##### 1 Answer

May 21, 2015

**We have :**

**Basis :**

With

With

**Inductive step :**

Let's assume

Let's demonstrate that it is true for

**QED**.

May 21, 2015

**We have :**

**Basis :**

With

With

**Inductive step :**

Let's assume

Let's demonstrate that it is true for

**QED**.