Insert The Indicate Number Of Arithmetic A And B 1

Insert the indicate number of arithmetic a and b 1

 

Answer:

a2=1/2a+1/2

Step-by-step explanation:

a,_,

an=

a1=a

n=3

an=a1+(n-1)d

b=a+(3-1)d

a+2d=

2d=−a+

d=−1/2a+1/2

a2=a+(2-1)(−1/2a+1/2b)

a2=a−a+b+1/2a−1/2

a2=1/2a+1/2

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