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Mathematics 8 Online
OpenStudy (anonymous):

Determine without graphing whether the given quadratic function has a maximum value or a minimum value and then find the value f(x)=-3x^2+18x-7

OpenStudy (binary3i):

find its double derivative. it that is +ve it is a smiling parabola i, e, has an minimum. and negative then the opposite of what i said

OpenStudy (anonymous):

find drivative and set it to 0. The value of x which satisfys that is your posible point

OpenStudy (phi):

Second time is a charm ?

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