November 2019 1 26 Report
Jika fungsi f(x) = bx {}^{2} - (b + 2)x - 5mempunyai nilai tertinggi saatx = \frac{1}{4} ,maka...

(1) b = 4
(2) b = -4
(3) fungsi turun pada interval ( - 1, \frac{5}{4} )
(4) fungsi naik pada interval ( - \infty , \frac{1}{4} )

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