Question

Se considera functia f:R-R,f(x)=$x^{3}$+6x+2
a)aratati ca f(x)=3($x^{2}$+2)
b)aratati ca $\lim_{x\to \ 0}\frac{f(x)}{x+2} =3$
c)demonstrati ca -5$\leq$f(x)$\leq$9,pentru orice x apartine {-1,1}.am nevoie urgent va roog!!

Answer 1

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