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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

Complex#*

(::BigDecimal) -> ::Complex
(::Numeric) -> ::Complex
complex * numeric → new_complex

Returns the product of self and numeric:

Example
Complex.rect(2, 3)  * Complex.rect(2, 3)  # => (-5+12i)
Complex.rect(900)   * Complex.rect(1)     # => (900+0i)
Complex.rect(-2, 9) * Complex.rect(-9, 2) # => (0-85i)
Complex.rect(9, 8)  * 4                   # => (36+32i)
Complex.rect(20, 9) * 9.8                 # => (196.0+88.2i)
See also .rectangular #** .rect #+ also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0