limit as x approaches 0 of (5x^2)/(x^4)

解答

x \to 0 lim (\frac{5 x ^{2}}{x ^{4}})

\infty

求解步骤

x \to 0 lim (\frac{5 x ^{2}}{x ^{4}})

如果

x \to a - lim f (x) = x \to a + lim f (x) = L

则

x \to a lim f (x) = L

x \to 0 - lim (\frac{5 x ^{2}}{x ^{4}}) = \infty

x \to 0 + lim (\frac{5 x ^{2}}{x ^{4}}) = \infty

= \infty

\int_{0}^{2} x^{3} 3 x + 1 d x

t a y l or ln (x), at 4

f (x) = \frac{- x ( x + 4 )}{( x ^{2} - x - 2 ) ^{2}}

n = 1 \sum \infty \frac{( e ^{n} )}{n}

y^{^{'''}} + 13 y^{^{''}} - 9 y^{^{'}} - 405 y = 0