At what value of X does the function y = -3 - 2x + X2 att...
At what value of X does the function y = -3 - 2x + X2 attain a minimum value?
-1
14
4
1
Correct answer is D
Given that y = -3 - 2x + X2
then, dydx = -2 + 2x
At maximum value, dydx = O
therefore, -2 + 2x
2x = 2
x = 2/2 = 1
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