jika f(x) = x^5 + mx⁴- 2x^3+ 1 dan f(2) = 3 maka f(-2) = .... bantu jawab pliss penting bgt
Matematika
putri6973
Pertanyaan
jika f(x) = x^5 + mx⁴- 2x^3+ 1 dan f(2) = 3 maka f(-2) = ....
bantu jawab pliss penting bgt
bantu jawab pliss penting bgt
1 Jawaban
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1. Jawaban Anonyme
jawab
fungsi
f(x) = x⁵ + mx⁴ - 2x³ + 1
f(2) = 3
2⁵ + m(2)⁴ - 2(2)³ + 1 = 3
32 + 16 m - 16 + 1 = 3
16m + 17 = 3
16 m = -14
m = -14/16 = - 7/8
f(x) = x⁵ - 7/8 x⁴ - 2x³ + 1
f(-2) = (-2)⁵ - 7/8(-2)⁴ - 2(-2)³ + 1
f(-2) = - 32 - 14 + 16 + 1
f(-2) = - 29