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f(x).g(x)=f'(x).g(x)+f(x).g'(x)
ej1: (3x^3)(2x^2)=(9x^2)(2x^2)+(3x^3)(4x)
ej2:f(x)=(3x^2-5x)(7x-1)
f'(x)=(6x-5)(7x-1)+(3x^2-5x)(7)
ej3: (2x-1)^2.(x-3)^-1
2(2x-1).(2)(x-3)+(2x-1)(-1)(x-3)^-2
ej4:
(2x).(√x^2-7)
2(√x^2-7)+(2x)(1/2)(x^2-7)^(-1/2)(2x)
ej5: f(x)=sen(x).cos(x^3)
f'(x)=cos(x)cos(x^3)+sen(x)(-sen(x^3)(3x^2)