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Să se calculeze următoarele limite: lim 3x²-x+lnx x→ 5lnx+x-4x² b) lim 818 d) lim X- x4 ex²+x+1 ; lim ...In (e+x). x→ ln (ex-x) In (x² + e³) x→∞ In (x² + e²x) e) lim x-1 lim 2 tg√x²+1-tg√x+1)! lnx x->0 ctgx X > 0 tg (x² - 1) lim In (sin 2x) x→0 In (sin 4x) > > 0​