Prove by mathematical induction: ∑_(i=1)^n▒〖3^i=3(3^n-1)/2〗

Prove by mathematical induction that : E (3r-5)= 3n^2-7n /2 r=1

Prove by mathematical induction that x^2n - y^2n has a factor of x+y. My answer is incomplete sin...

Prove by mathematical induction that 1+3+5+7+......+(2n-1)=n²

Prove by mathematical induction that the sum of the first n terms of the geometric series 1/5 + 1/5^...

prove by mathematical induction that for all positive integers n, sin(nπ+x)=(-1)^n

prove by mathematical induction that for all positive integers n, sin(nπ+x)=(-1)^n, using n=k and n=...

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