prove by PMI that 2+6+18+ +2 3^(n-1) = (3^n)-1 - Maths - Principle of Mathematical Induction

Question

prove by PMI that 2+6+18+ +2 3^(n-1) = (3^n)-1

Neha Sethi · Accepted Answer

Kindly refer the similar link for your query

https://www meritnation
com/ask-answer/question/by-pmi-prove-1-4-7-3n-2-1-2n-3n-1/principle-of-mathematical-induction/8116361
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prove by PMI that 2+6+18+......+2.3^(n-1) = (3^n)-1