Question

DADA A FUNÇÃO :
f(x) = x² + 4

defina : 
a ) f(1)
b ) f(2) 
c ) f(1) + f(2) 

2 - DEFINA

a) Log 2   16
b ) Log 2   64

Answer 1

  f(x) = x² + 4

defina : 
a ) f(1)= (1)² + 4 = 1 +4 = 5
b ) f(2) = (2)² + 4 = 4 + 4 = 8 
c ) f(1) + f(2) = 5 + 8 =13

2 - DEFINA

a) Log  16 = x  ==> 2^x = 16 ==> 2^x = 2^4 ==> x = 4
           2


b ) Log 64 = x ==> 2^x = 64 ==> 2^x = 2^6 ==> x = 6
            2