4. Proof by Induction Prove the following are the correct closed forms for the summation (a) Prove by induction that Vn E z+ £-1 (-1)*i² = (-1)"n(n+1)/2

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Chapter2: Second-order Linear Odes
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4.
Proof by Induction Prove the following are the correct closed forms for the summation
(a) Prove by induction that Vn e z+ E, (-1)*¿² = (-1)"n(n+ 1)/2
(b) Prove by induction the closed form for E 1/i(i+ 1) = 1 - 1/(n+1)
(c) Prove by induction the closed form for Vx E R if |æ| < 1, then E
1/(1-x)
Transcribed Image Text:4. Proof by Induction Prove the following are the correct closed forms for the summation (a) Prove by induction that Vn e z+ E, (-1)*¿² = (-1)"n(n+ 1)/2 (b) Prove by induction the closed form for E 1/i(i+ 1) = 1 - 1/(n+1) (c) Prove by induction the closed form for Vx E R if |æ| < 1, then E 1/(1-x)
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