Question

dada a função f(x)=5x elevado a 2+6,com € Ř determine
a)f(2)
b)f(-2)
c)f(0)
d)f(1)
e)f(-1)

Answer 1

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Resolução :

f ( X ) = 5X² + 6

f ( 2 ) = 5 ( 2 )² + 6

f ( 2 ) = 5 • 4 + 6

f ( 2 ) = 20 + 6

f ( 2 ) = 26

.

f ( - 2 ) = 5 ( - 2 )² + 6

f ( - 2 ) = 5 • 4 + 6

f ( - 2 ) = 20 + 6

f ( - 2 ) = 26

.

f ( 0 ) = 5 ( 0 )² + 6

f ( 0 ) = 5 • 0 + 6

f ( 0 ) = 0 + 6

f ( 0 ) = 6

.

f ( 1 ) = 5 ( 1 )² + 6

f ( 1 ) = 5 + 6

f ( 1 ) = 11


.

f ( - 1 ) = 5 ( - 1 )² + 6

f ( - 1 ) = 5 + 6

f ( - 1 ) = 11