https://www.youtube.com/watch?v=Y5zCUpQy6Rw
Hola
u = 3 x
cuando x-> 0 u -> 0
x = u/3
x^3 = (1/27) u^3
L = Lim ( (sen(3x))^3 ) / ( 3 x^3)
...x->0
L = Lim ( (sen(u))^3 ) / ( 3 (1/27) u^3)
...u->0
L = (27/3) (lim[ sen(u) / u ])^3
................x->0
L = 9 * 1^3
L = 9
*********
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https://www.youtube.com/watch?v=Y5zCUpQy6Rw
Hola
u = 3 x
cuando x-> 0 u -> 0
x = u/3
x^3 = (1/27) u^3
L = Lim ( (sen(3x))^3 ) / ( 3 x^3)
...x->0
L = Lim ( (sen(u))^3 ) / ( 3 (1/27) u^3)
...u->0
L = (27/3) (lim[ sen(u) / u ])^3
................x->0
L = 9 * 1^3
L = 9
*********