Question 1039286
A quadratic function is given.
f(x) = 1 + x − sqrt of 2(x^2) 
a) Use a graphing device to find the maximum value of the quadratic function f, rounded to two decimal places.
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{{{graph(400,400,-5,5,-5,5,1+x-sqrt(2)x^2)}}}
Max occurs at x = -b/(2a) = -1/(2sqrt(2)) = 0.3536..
f(0.3536) = 1.177
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Max is (0.3536,1.177)
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Cheers,
Stan H.
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Correct: value of f is f(x) = 1.18