estw f(x)=x^4
tote f '(x)=4x^3 (1)
omws f(x)=x*x^3=(x^3+x^3+x^3...)x fores
ara f '(x)=(3x^2+3x^2+3x^2...)x fores = 3x^2*x = 3x^3 (2)
apo (1),(2) 4x^3=3x^3 ara 4=3 ....?????
filika ,
marios
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