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PLEASE ANSWER RIGHT AWAY

PLEASE ANSWER RIGHT AWAY-example-1
User Eghosa
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1 Answer

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ANSWER


a_(7)= - 20

Step-by-step explanation

The sequence is defined recursively by:


a_(n+1)=-2a_n+4

Where


a_1=1


a_(2)=-2a_1+4


a_(2)=-2(1)+4 = 2


a_(3)=-2a_2+4


a_(3)=-2(2)+4 = 0


a_(4)=-2a_3+4


a_(4)=-2(0)+4 = 4


a_(5)=-2a_4+4


a_(5)=-2(4)+4 = - 4


a_(6)=-2a_5+4


a_(6)=-2( - 4)+4 = 12


a_(7)=-2a_6+4


a_(7)=-2(12)+4 = - 20

User Ruaridhw
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