limit as h approaches 0 of 8x+4h+9

解答

h \to 0 lim (8 x + 4 h + 9)

8 x + 9

求解步骤

h \to 0 lim (8 x + 4 h + 9)

代入值

h = 0

= 8 x + 4 \cdot 0 + 9

化简

= 8 x + 9

\frac{d}{d x} (x^{3} - 3 x - x)

d er i v a t i v e arccos (2 x)

t an g e n t f (x) = x + 6, at x = 1

d er i v a t i v e \frac{x ^{2}}{7 + 6 x}

\frac{d}{d x} (R (x) (x)^{2} - x^{2})