Jawaban:
[tex]f(p) = 3x {}^{2} + 2x - 7[/tex]
jika f(p)=1, maka langsung dimasukkan langsung ke dalam fungsi
[tex]f(1) = 3(1) {}^{2} + 2(1) - 7[/tex]
[tex]f(1) = 9 + 2 - 7[/tex]
[tex]f(1) = 11 - 7[/tex]
[tex]f(1) = 4[/tex]
Penjelasan dengan langkah-langkah:
[tex]f(x) = 3 {x}^{2} + 2x - 7 \\ f(p) = 1 \\ f(p) = 3(p)^{2} + 2(p) - 7 = 1 \\ 3 {p}^{2} + 2p - 8 = 0[/tex]
[tex]3 {p}^{2} + 6p - 4p - 8 = 0 \\ 3p(p + 2) - 4(p + 2) = 0 \\ 3p - 4 = 0 \: \: atau \: \: p + 2 = 0 \\ 3p = 4 \: \: atau \: p = - 2 \\ p = \frac{4}{3} \: \: atau \: \: p = - 2[/tex]
Jadi nilai p = 4/3 atau p = -2
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Jawaban:
[tex]f(p) = 3x {}^{2} + 2x - 7[/tex]
jika f(p)=1, maka langsung dimasukkan langsung ke dalam fungsi
[tex]f(1) = 3(1) {}^{2} + 2(1) - 7[/tex]
[tex]f(1) = 9 + 2 - 7[/tex]
[tex]f(1) = 11 - 7[/tex]
[tex]f(1) = 4[/tex]
Penjelasan dengan langkah-langkah:
[tex]f(x) = 3 {x}^{2} + 2x - 7 \\ f(p) = 1 \\ f(p) = 3(p)^{2} + 2(p) - 7 = 1 \\ 3 {p}^{2} + 2p - 8 = 0[/tex]
[tex]3 {p}^{2} + 6p - 4p - 8 = 0 \\ 3p(p + 2) - 4(p + 2) = 0 \\ 3p - 4 = 0 \: \: atau \: \: p + 2 = 0 \\ 3p = 4 \: \: atau \: p = - 2 \\ p = \frac{4}{3} \: \: atau \: \: p = - 2[/tex]
Jadi nilai p = 4/3 atau p = -2