-14
-12
14
12
Correct answer is A
y = X2 - 3x + 2, dydx = 2x - 3
at turning pt, dydx = 0
∴ 2x - 3 = 0
∴ x = 32
d2ydx2 = ddx(ddx)
= 270
∴ ymin = 232 - 332 + 2
= 94 - 92 + 2
= -14
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