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What real value of t produces the smallest value of the quadratic t^2-9t-36+t^2-11t?

 Feb 14, 2022
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= 2t^2 -20t -36         Bowl shaped parabola (due to positive coefficient of x^2)   min occurs at t = - b/2a = - -20/(2*2) = 5

 Feb 14, 2022

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