Verified answer

Bonsoir,

• U1 = 3 - 2 × U0

= 3 - 2 × 4

= 3 - 8 = -5 ✅

• U2 = 3 - 2 × U1

= 3 - 2 × (-5)

= 3 + 10 = 13 ✅

• U3 = 3 - 2 × U2

= 3 - 2 × 13

= 3 - 26 = -23 ✅

• U4 = 3 - 2 × U3

= 3 - 2 × (-23)

= 3 + 46 = 49 ✅

Bonne soirée ! ☄