Se aplica la regla de la derivada de una multiplicación:
; calculamos :
No logro encontrar los pasos en la búsqueda de esta derivada.
Perola derivada
; calculamos :
La derivada del seno es igual al coseno:
Como resultado de:
Respuesta:
/ //-sin(x) + x*cos(x) \ \ | ||------------------ for x != 0| | sinc(x) sinc(x) |sinc(x) || 2 | | x *cos(x) + x *|------- + |< x |*log(x)|*sin(x) | x || | | | || 0 otherwise | | \ \\ / /
/ / //-sin(x) + x*cos(x) \\ \ | | ||------------------ for x != 0|| | | | || 2 || | | | 2 // /2*(-sin(x) + x*cos(x)) \ \ 2*|< x || | | |/ //-sin(x) + x*cos(x) \ \ ||-|---------------------- + sin(x)| | || || / //-sin(x) + x*cos(x) \ \ | | || ||------------------ for x != 0| | || | 2 | | || 0 otherwise || | ||------------------ for x != 0| | | sinc(x) | ||sinc(x) || 2 | | || \ x / | sinc(x) \\ /| |sinc(x) || 2 | | | x *|-sin(x) + ||------- + |< x |*log(x)| + |<----------------------------------- for x != 0|*log(x) - ------- + -----------------------------------|*sin(x) + 2*|------- + |< x |*log(x)|*cos(x)| | || x || | | || x | 2 x | | x || | | | | || || 0 otherwise | | || | x | | || 0 otherwise | | | | |\ \\ / / || 0 otherwise | | \ \\ / / | \ \ \\ / / /
/ / // /2*(-sin(x) + x*cos(x)) \ \ \ \ | | ||-|---------------------- + sin(x)| | | | | | //-sin(x) + x*cos(x) \ || | 2 | | / //-sin(x) + x*cos(x) \\| / //-sin(x) + x*cos(x) \\ | | | ||------------------ for x != 0| || \ x / | | ||------------------ for x != 0||| | ||------------------ for x != 0|| | | | || 2 | 3*|<----------------------------------- for x != 0| | || 2 ||| | || 2 || | | | 3 // 3*sin(x) 6*(-sin(x) + x*cos(x)) \ 3*|< x | || x | |// /2*(-sin(x) + x*cos(x)) \ \ 2*|< x ||| | 2 // /2*(-sin(x) + x*cos(x)) \ \ 2*|< x || | | |/ //-sin(x) + x*cos(x) \ \ ||-cos(x) + -------- + ---------------------- | || | || | / //-sin(x) + x*cos(x) \ \ |||-|---------------------- + sin(x)| | || ||| / //-sin(x) + x*cos(x) \ \ |/ //-sin(x) + x*cos(x) \ \ ||-|---------------------- + sin(x)| | || || | | || ||------------------ for x != 0| | || x 3 | || 0 otherwise | || 0 otherwise | | ||------------------ for x != 0| | ||| | 2 | | || 0 otherwise ||| | ||------------------ for x != 0| | || ||------------------ for x != 0| | || | 2 | | || 0 otherwise || | sinc(x) | ||sinc(x) || 2 | | || x | \\ / 2*sinc(x) \\ / |sinc(x) || 2 | | ||| \ x / | sinc(x) \\ /|| |sinc(x) || 2 | | ||sinc(x) || 2 | | || \ x / | sinc(x) \\ /| | x *|-cos(x) + ||------- + |< x |*log(x)| + |<------------------------------------------- for x != 0|*log(x) - ----------------------------------- + --------- + ---------------------------------------------------- + 3*|------- + |< x |*log(x)|*||<----------------------------------- for x != 0|*log(x) - ------- + -----------------------------------||*sin(x) - 3*|------- + |< x |*log(x)|*sin(x) + 3*||------- + |< x |*log(x)| + |<----------------------------------- for x != 0|*log(x) - ------- + -----------------------------------|*cos(x)| | || x || | | || x | 2 3 x | x || | | ||| x | 2 x || | x || | | || x || | | || x | 2 x | | | || || 0 otherwise | | || | x x | || 0 otherwise | | ||| | x || | || 0 otherwise | | || || 0 otherwise | | || | x | | | |\ \\ / / || 0 otherwise | \ \\ / / ||| 0 otherwise | || \ \\ / / |\ \\ / / || 0 otherwise | | | \ \ \\ / \\\ / // \ \\ / / /