结束上页 下页解?
结束例 26? 已知 f(u)可导?求 [f (ln x)]{f [(x?a)n]}?及 {[f(x?a)]n}
{f[(x?a)n]}?
f?[(x?a)n]?n(x?a)n?1?(x?a)?
n(x?a)n?1f?[(x?a)n]?
f?[(x?a)n]?[(x?a)n]?
{[f(x?a)]n}n[f(x?a)]n?1?[f(x?a)]?
n[f(x?a)]n?1?f?(x?a)?(x?a)?
n[f(x?a)]n?1?f?(x?a)?