At what value of x does the function y= -3 – 2x +x2 attain a minimum value?

Assessment: JAMB UTME - Mathematics - 2010 Subject: General Mathematics

Question 1 Report

At what value of x does the function y= -3 – 2x +x2 attain a minimum value?
Answer Details
To find the minimum value of the function y = -3 - 2x + x^2, we need to determine the value of x that corresponds to the vertex of the parabolic graph. The vertex of a parabolic graph with equation y = ax^2 + bx + c is located at x = -b/2a. In this case, a = 1, b = -2, and c = -3. Therefore, x = -(-2)/(2*1) = 1. So the answer is (E) 1, and that's the value of x at which the function y attains its minimum value.

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