Question

Помогите...плииз
Найдите формулу производной для произведения функций f и ϕ. а) (f ⋅ ϕ)′ = f′ ⋅ ϕ′ б) (f ⋅ ϕ)′ = f′ ⋅ ϕ + f ⋅ ϕ′ в) (f ⋅ ϕ)′ = f′ ⋅ ϕ г) (f ⋅ ϕ)′ = f′ + ϕ′

Answer 1

производная от произведения двух функций находится по формуле:

б) (f ⋅ ϕ)′ = f′ ⋅ ϕ + f ⋅ ϕ′