___
\/ x
(cos(x))
/ ___\ d | \/ x | --\(cos(x)) / dx
Не могу найти шаги в поиске этой производной.
Но производная
Теперь упростим:
Ответ:
___ / ___ \
\/ x |log(cos(x)) \/ x *sin(x)|
(cos(x)) *|----------- - ------------|
| ___ cos(x) |
\ 2*\/ x /
/ 2 \
| / ___ \ |
| | log(cos(x)) 2*\/ x *sin(x)| |
| |- ----------- + --------------| |
___ | | ___ cos(x) | ___ 2 |
\/ x | ___ \ \/ x / log(cos(x)) \/ x *sin (x) sin(x) |
(cos(x)) *|- \/ x + --------------------------------- - ----------- - ------------- - ------------|
| 4 3/2 2 ___ |
\ 4*x cos (x) \/ x *cos(x)/
/ 3 \
| / ___ \ / ___ \ / ___ 2 \ |
| | log(cos(x)) 2*\/ x *sin(x)| | log(cos(x)) 2*\/ x *sin(x)| | ___ log(cos(x)) 4*\/ x *sin (x) 4*sin(x) | |
| |- ----------- + --------------| 3*|- ----------- + --------------|*|4*\/ x + ----------- + --------------- + ------------| |
___ | | ___ cos(x) | | ___ cos(x) | | 3/2 2 ___ | ___ ___ 3 2 |
\/ x | 3 \ \/ x / 3*log(cos(x)) \ \/ x / \ x cos (x) \/ x *cos(x)/ 2*\/ x *sin(x) 2*\/ x *sin (x) 3*sin (x) 3*sin(x) |
(cos(x)) *|- ------- - --------------------------------- + ------------- + ------------------------------------------------------------------------------------------- - -------------- - --------------- - --------------- + -------------|
| ___ 8 5/2 8 cos(x) 3 ___ 2 3/2 |
\ 2*\/ x 8*x cos (x) 2*\/ x *cos (x) 4*x *cos(x)/