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Verified answer
Mapel : MatematikaKelas : XI SMA
Bab : Differensial
Pembahasan :
f(2x + 1 / x - 3) = x² + 2x - 3
Misalkan (2x + 1)/(x - 3) = a
x = (3a + 1)/(a - 2)
Maka...
f(a) = [(3a + 1)/(a - 2)]² + 2[(3a + 1)/(a - 2)] - 3
f(a) = (9a² + 6a + 1)/(a² - 4a + 4) + (6a + 2)/(a - 2) - 3
f(a) = (9a² + 6a + 1 + 6a² - 10a - 4 - 3a + 6)/(a - 2)
f(a) = (15a² - 7a + 3)/(a - 2)
f'(a) = 0
f'(0) = 0
Verified answer