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f(x) = 4x² - 3x + c, masukkan nilai f(-1) = 10, maka:
f(x) = 4x² - 3x + c
f(-1) = 4(-1)² - 3(-1) + c
10 = 4(1) - (-3) + c
10 = 4 + 3 + c
10 = 7 + c
7 + c = 10
c = 10 - 7
c = 3
masukkan nilai c ke f(x) yang sudah di integralin tadi, maka:
f(x) = 4x² - 3x + c
f(x) = 4x² - 3x + 3 <-- (jawabannya)