Question

determine valor de x de modo que se tenha : 

a) x! = 1

b)x!=24

c)x!=760

d)x!=x

Answer 1

a) $x! = 1\\\\ x = 1!\\\\ x = 1.0!\\\\\ \boxed{x = 1}$

b) $x! = 24\\\\ x! = 4!\\\\ x\not\ ! = 4\not\ !\\\\ \boxed{x=4}$

c) $x! = 720\\\\\ x! = 6!\\\\ x\not\ ! = 6\not\ !\\\\\ \boxed{x=6}$

d) $x! = x$