Find the first four terms of the sequence defined by `a_1=3\ a n d\ a_n=3a_(n-1)+2` , for all `n .1.`

Explanation

`a_1=3` and `a_n=3 a_{n-1}+2 `

then, `a_{2}=3 a_{2-1}+2=3 a_{1}+2`


`Rightarrow quad=3 times 3+2=9+2 `


`Rightarrow a_{2}=11`


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