z = −1 + i nα = θ + 2πk f(x) = 3x − 2 z = r (cosθ + isinθ) (f(−x) = f(x), ∀ x ∈ D) ax + by + cz + d = 0 −x + 2y + z + t = −1 2x + 2y + z + 4t = 0 C = {z = x + iy x, y ∈ IR}

Mathematics to optimize advertising investments

The client is an Italian telecommunications operator, specialized in broadband connections and telephony. The company makes large investments in online and offline advertising, so it needs to accurately measure the return from each channel.

  • Description and benefits
ROI calculation
Increased objectivity
Management even in extreme contexts

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z = −1 + i nα = θ + 2πk u = ρ (cosα + isinα) f(x) = 3x − 2 z = r (cosθ + isinθ) ax + by + cz + d = 0 a (f(x + T) = f(x), ∀ x ∈ IR) (f(−x) = f(x), ∀ x ∈ D) 2x + 2y + z + 4t = 0 [x0 −r, x0 + r] (cosnα + isinnα) = (cosα + isinα)n z = −1 + i nα = θ + 2πk

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