Question

Write the first 5 terms for this sequence:

Answer 1

3, -6, 12, -24, 48

Explanation:

Given:

• 
  `a_1=3`
• 
  `a_(n+1)=-2 \cdot a_n`

Therefore,

`a_1=3`

`a_2=-2 \cdot a_1=-2 \cdot 3=-6`

`a_3=-2 \cdot a_2=-2 \cdot -6=12`

`a_4=-2 \cdot a_3=-2 \cdot 12=-24`

`a_5=-2 \cdot a_4=-2 \cdot -24=48`