Lim tan5x/sin3x X→∏ Lim( sinx-x*cosx)/(x2*sinx) X→0 Lim Lntan7x/ Lntan2x X→0+
问题描述:
Lim tan5x/sin3x X→∏ Lim( sinx-x*cosx)/(x2*sinx) X→0 Lim Lntan7x/ Lntan2x X→0+
Lim tan5x/sin3x
X→∏
Lim( sinx-x*cosx)/(x2*sinx)
X→0
Lim Lntan7x/ Lntan2x
X→0+
答
不断运用洛比达法则.(1)tan5x5/cos²5x5/cos²(5π)5lim -------= lim ---------- =------------ = --- = 5/3 x→πtan3xx→π 3/cos²3x3/cos&sup...