Question

Dada a funçao por f(x)=log2 (x+1) determine a) f (7) e b) f (15)

Answer 1

a) f(x) = log2 (x + 1)

f(7) = log2 (7 + 1)

f(7) = log2 8

f(7) = log2 2³

f(7) = 3

b) f(15) = log2 (x + 1)

f(15) = log 2 (15+ 1)

f(15) = log2 16

f(15) = log2 2^4

f(15) = 4

Espero ter ajudado.

Answer 2

Vejamos :

$\boxed{F(X) = Log2 (X + 1)}$
$\ F(7) = Log2 (7 + 1)$
$\ F(7) = Log2~8$
$\ F(7) = Log2~2^3$
$\ F(7) = 3$

$\boxed{F(X) = Log2 (X + 1)}$
$\ F(15) = Log2 (15 + 1)$
$\ F(15) = Log2~16$
$\ F(15) = Log2~2^4$
$\ F(15) = 4$