Given f ( x ) = 3 x 2 − 4 x − 1 and...

wstecznyg5

wstecznyg5

Answered

2022-07-28

Given f ( x ) = 3 x 2 4 x 1 and g ( x ) = 8 2 x, find each of the following:
a) f(2)
b) f(-2)
c) g(1/4)

Answer & Explanation

Lillianna Mendoza

Lillianna Mendoza

Expert

2022-07-29Added 16 answers

Step 1
Given: f ( x ) = 3 x 2 4 x 1
g ( x ) = 8 2 x
a) f ( 2 ) = ?
f ( x ) = 3 x 2 4 x 1
f ( 2 ) = 3 × 2 2 4 × 2 1
= 12 8 1
= 12 9
Answer: = 3
b) f ( 2 ) = ?
f ( x ) = 3 x 2 4 x 1
f ( 2 ) = 3 ( 2 ) 2 4 × ( 2 ) 1
= 12 + 8 1
= 20 1
Answer: = 19
c) g ( 1 / 4 ) = ?
g ( x ) = 8 2 x
g ( 1 / 4 ) = 8 2 x 1 4 2
Answer: = 8 1 2 = 15 2

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