Question

The vertex of f(x) = 3x ^2+ 5x + 2 is a:
minimum
maximum
none of these

Answer 1

minimum

Explanation:

Given a quadratic in standard form f(x) = ax² + bx + c ( a ≠ 0 )

• If a > 0 then vertex is a minimum

• If a < 0 then vertex is a maximum

f(x) = 3x² + 5x + 2 ← is in standard form

with a = 3

Since a > 0 then vertex is a minimum