f(x) = √144 x 5x
f(5) = ?
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Penyelesaian ;
- f(x) = √144 × 5x
- f(5) = √144 × 5(5)
- f(5) = 12 × 25
- f(5) = 25 × 12
- f(5) = 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25
- f(5) = 50 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25
- f(5) = 75 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25
- f(5) = 100 + 25 + 25 + 25 + 25 + 25 + 25 + 25 + 25
- f(5) = 125 + 25 + 25 + 25 + 25 + 25 + 25 + 25
- f(5) = 150 + 25 + 25 + 25 + 25 + 25 + 25
- f(5) = 175 + 25 + 25 + 25 + 25 + 25
- f(5) = 200 + 25 + 25 + 25 + 25
- f(5) = 225 + 25 + 25 + 25
- f(5) = 250 + 25 + 25
- f(5) = 275 + 25
- f(5) = 300.
f(x) = √144 × 5x
f(5) = √12² × 5(5)
f(5) = 12 × ( 5 × 5 )
f(5) = 12 × 25
f(5) = 300