Kelas XII
Sukino Kelas XII
Kunci Jawaban Matematika Kelas XII Peminatan
Bab 2 Turunan Fungsi Trigonometri
RUKO 2
Bag A
27. Diketahui g(x) = ax2 +bx + c dengan g(1) = 2, g'(0) = 0, dan g'(1) = 2. Fungsi g(x) = ...
a. x2 - 2x - 3
b. x2 + x - 2
c. x2 + 1
d. x2 - 2
e. x2 - 3
Jawaban : C
g(x) = ax2 +bx + c
g'(x) = 2a x + b
g(1) = 2
g(1) = ax2 +bx + c
2 = a + b + c ... (i)
g'(0) = 0
g'(0) = 0 + b
0 = b
2 = a + b + c ... (i)
2 = a + c ,,, (ii)
g'(1) = 2
g'(1) = 2a x + b
2 = 2a + b
2 = 2a
a = 1
2 = a + c ,,, (ii)
2 = 1 + c
c = 1
g(x) = ax2 +bx + c
g(x) = x2 + 1
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