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03-11-2021
Mathematics

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Fungsi f(x) = x³ - 12x² + 45x -18 merupakan fungsi naik pada interfal

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ferrybukantoro ferrybukantoro

03-11-2021

Step-by-step explanation:

f(x) = x³ - 12x² + 45x -18

to find the interval of the function :

f'(x) > 0

3x²-24x+45 > 0

x²-8x +15 >0

(x-5) (x-3) >0

x<3 or x >5

the solutions :

{x < 3 or x > 5}

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