Question

If f(x) = 2x2/2
+ 4, find f(3).

Answer 1

13

Explanation:

Given in the question a function

f(x) =
`(2x^(2) )/(2)+4`

when we plug in x = 3

`(2(3)^(2) )/(2)+4`

2 in denominator and numerator will cancel out

`3^(2)+4`

9 + 4

13

Answer 2

The value of f(3) = 13

Explanation:

It is given that a function f(x),

f(x) = 2x²/2 + 4

To find the value f(3)

For that we have to substitute 3 instead of x

f(x) = 2x²/2 + 4

f(3) = 2 * (3)²/2 + 4

= (2 * 9/2 )+ 4 = 13

Therefore the value of f(3) = 13