展开 limh\Rightarrow 0(x+h)3-x^3h

解答

展开

l imh \Rightarrow 0 (x + h) 3 - x^{3} h

0 \cdot 3 i \Rightarrow l mh x + 0 \cdot 3 i \Rightarrow l mhh - x^{3} h

求解步骤

l imh \Rightarrow 0 \cdot (x + h) \cdot 3 - x^{3} h

= 0 \cdot 3 i \Rightarrow l mh (x + h) - h x^{3}

乘开

l imh \Rightarrow 0 \cdot 3 (x + h) : 0 \cdot 3 i \Rightarrow l mh x + 0 \cdot 3 i \Rightarrow l mhh

= 0 \cdot 3 i \Rightarrow l mh x + 0 \cdot 3 i \Rightarrow l mhh - x^{3} h

e x p an d 1.25 (1 - e^{- 5 t})

e x p an d a (- 5, - 1) b (5, 4)

e x p an d 3 (4 g + 6 = 2 (6 g + 9))

e x p an d l im x \Rightarrow 6 (3 x - 4) (3 x - 5)

e x p an d (3 x - 6) (x + 4)