Persamaan garis singgng kurva f(x) = x3 – 9x2 + 5x + 10, di titik yang berabsis 2 adalah

f(x) = x³ – 9x² + 5x + 10
absis = 2

Y = (2)³ - 9 (2)² + 5(2) + 10
Y = 8 - 36 + 10 + 10 = -8

Y' = m
m = 3x² - 18x + 5
m = 3(2)² - 18(2) + 5 = 12 - 36 + 5
m = -19

pgs --> y-y1 = m(x-x1)
y - (-8) = (-19)(x - 2)
y = -19x + 38 - 8
y = -19x + 30

y + 19x - 30 = 0