0
First take the derivative: y' = 4x - 7
Now, solve for derivate equals zero:
4x - 7 = 0
4x = 7
x = 7/4
Locations where the derivative is zero may be a minimum, or a maximum, or neither (in this case it is indeed a minimum). Finally calculate the value of y for this particular value of x.
What else can I help you with?
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