limit as x approaches 7+of 6/(x-7)

解答

x \to 7 + lim (\frac{6}{x - 7})

\infty

求解步骤

x \to 7 + lim (\frac{6}{x - 7})

x

从右侧趋近于

7, x > 7 \Rightarrow x - 7 > 0

分母从右侧趋近于 0，为正值

= \infty

h \to 0 lim \frac{( 8 ( \frac{1}{2} + h ) ^{8} - 8 ( \frac{1}{2} ) ^{8} )}{h}

a \to - 2 lim (\frac{a ^{3} + 8}{a + 2})

x \to 0 + lim (3 x + 2)

x \to 3 lim ((x - 3) csc (π x))

x \to - \frac{1}{2} lim (x)