175k views
2 votes
Find the values of b such that the function has the given minimum value.

f(x) = x^2 + bx - 27; Minimum value: -63

User GRoutar
by
8.1k points

1 Answer

3 votes

Final Answer:

The values of b that result in the function f(x) = x^2 + bx - 27 having a minimum value of -63 are b = -12 and b = 12.

Step-by-step explanation:

Given function f(x) = x^2 + bx - 27.

Identify the coefficient of the quadratic term (x^2) as 1.

Use the formula for the minimum value of a quadratic function f(x) = ax^2 + bx + c: Minimum value = c - (b^2 / 4a).

Substitute the given minimum value (-63) into the formula: -63 = -27 - (b^2 / 4).

Solve for b^2: b^2 = 144.

Find b: b = ±12.

Therefore, the values of b are -12 and 12, which satisfy the given conditions.

User Sharuk Ahmed
by
7.9k points