Question

Find the first six terms of the sequence.

a1 = -9, an = 4 • an-1

Answer 1

a2 = 4 * -9 = -36

a3 = 4 * (answer for previous iteration of a (a2))

a4 = 4 * (answer for previous iteration of a (a3))


Just repeat this.

Answer 2

The first six terms of the sequence = {-9, -36, -144, -576, -2304, -9216}

Explanation:

Given: a1 = -9, an = 4 • an-1

First term a1 = -9 and the common difference (d) = 4

a1 = -9

a2 = -9*4 = -36

a3 = -36*4 = -144

a4= -144*4 = -576

a5 = -576*4 = -2304

a6 = -2304*4 = -9216

Therefore, the first six terms of the sequence = {-9, -36, -144, -576, -2304, -9216}

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