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Given [tex]f(x) = x^2[/tex]:

1. What is [tex]f(x) + f(x) + f(x)[/tex]?
[tex]3 f(x) = \square[/tex]

2. Evaluate [tex]3 f(2) = \square[/tex]


Sagot :

Let's solve this step by step.

1. First, we need to understand the function given:
[tex]\[ f(x) = x^2 \][/tex]

2. The question asks us to determine what [tex]\( f(x) + f(x) + f(x) \)[/tex] is. We know that adding [tex]\( f(x) \)[/tex] three times is the same as multiplying it by 3:
[tex]\[ f(x) + f(x) + f(x) = 3 f(x) \][/tex]

3. Therefore, [tex]\( 3 f(x) \)[/tex] can be written as:
[tex]\[ 3 f(x) = 3 \cdot f(x) = 3 \cdot x^2 \][/tex]

4. Now, we need to evaluate [tex]\( 3 f(2) \)[/tex]:
[tex]\[ f(2) = 2^2 = 4 \][/tex]

5. Then, multiply this result by 3:
[tex]\[ 3 f(2) = 3 \cdot 4 = 12 \][/tex]

So, [tex]\( 3 f(2) \)[/tex] evaluates to 12.