diketahui fungsi f r

Sale Price:$333.00 Original Price:$999.00
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Diketahui fungsi f: R→ R dan g: R → R dengan f(x) = x 2 + 7x – 2 dan g(x) = 3x + 2. fungsi pci slot Tentukan nilai a sehingga f(a) = 2g(a)! Pembahasan: f(x) = x 2 + 7x – 2. fungsi pci slot g(x) = 3x + 2 a = … ? f(a) = 2g(a) a 2 + 7a – 2 = 2(3a + 2) a 2 + 7a – 2 = 6a + 4 a 2 + 7a – 2 – 6a – 4 = 0 a 2 + a – 6 = 0 (a + 3)(a – 2) = 0 a = -3 atau a = 2

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