limit as x approaches 3 of ((4x^2+3x))/5

解答

x \to 3 lim (\frac{( 4 x ^{2} + 3 x )}{5})

9

求解步骤

x \to 3 lim (\frac{4 x ^{2} + 3 x}{5})

代入值

x = 3

= \frac{4 \cdot 3 ^{2} + 3 \cdot 3}{5}

化简

\frac{4 \cdot 3 ^{2} + 3 \cdot 3}{5} : 9

= 9

in v erse l a pl a ce \frac{10}{2 s + 10}

\int \frac{cos ( \frac{1}{x} )}{x ^{2}} d x

d er i v a t i v e (lo g_{10} (n))^{2}

x y^{^{'}} - y = \frac{3}{2} x ln (x)

\int \frac{5 x - 1}{x ^{2} - 3 x - 40} d x