Riemann Zeta Function at Non-Positive Integers/Examples/Zeta(-3)

Example of Use of Riemann Zeta Function at Non-Positive Integers

 * $\map \zeta {-3 } = \dfrac 1 {120} $

Proof
Follows directly from the Riemann Zeta Function at Non-Positive Integers:

Explicit derivation illustrated below: