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![Matematika Tentukan interval agar setiap fungsi berikut naik!<br />A. <br />[tex]f(x) = - {x }^{2} - 4x + 1[/tex]<br />B. <br />[tex]f(x) = {x}^{3} + 3 {x}^{2} - 9x - 4[/tex]<br /><br />MOHON BANTUANNYA YAA!](https://1.bp.blogspot.com/-FxxoZkxtk_U/WKAvV2Gd6iI/AAAAAAAACd0/UTrLC-1x23k1E0oqRLErM2XliW2XDiBlQCK4B/s1600/dif.jpg "Matematika Tentukan interval agar setiap fungsi berikut naik!<br />A. <br />[tex]f(x) = - {x }^{2} - 4x + 1[/tex]<br />B. <br />[tex]f(x) = {x}^{3} + 3 {x}^{2} - 9x - 4[/tex]<br /><br />MOHON BANTUANNYA YAA!")
