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how to write a user defined function that calculates the maximum or minimum of a quadratic equation of the form

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How can we write a user-definedfunction that calculates maximum and minimum of an quadratic equation.
since i know how to find max and min of an array only.
This question has been troubling me for days. If anyone could solve it

Answers (1)

Ildeberto de los Santos Ruiz
Try this:
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f = @(x) x^2-5*x+6;
initial = 0;
fminsearch(f,initial)
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To find a maximum, use -f instead of f.

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