# Prove the followi

Let P(n): For n =1 is true,

P(1): = Since, P(n) is true for n =1

Now, For n = k

P(k): - - - - (1)

We have to show that, Now, = using equation (1)

= Therefore, P(n) is true for n = k + 1

Hence, P(n) is true for all n ϵ N by PMI

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