A wire 24inches long is to be cut into four pieces to form a rectangle whose shortest side has a length of x: Determine the domain of the function and use a graphing utility to graph the function over that domain Use the graph of the function to approximate the maximum area of the rectangle. Make a conjecture about the dimensions that yield a maximum area.
If the function is the Area, then Area = length*width = x*(12-x) = 12x - x^2 Domain is x>0, since you can't have a rectangle with negative length
since it says shortest side, is there a limit to the domain, like is it in an interval?
oh yeah, 0 < x<6, If x is 7 then width would be 5, but x must be shorter
oh okay thank you and i was wondering if you had any idea how to do the next part?
well do you have a graphing calculator or you can use...graphcalc.com to see what 12x - x^2 looks like
look at the graph , and wherever the graph is highest is the maximum area
i'm not very familiar with the graphing calc. i'm sorry once i graph it is going up continually
change the window size...this is a parabola it will reach a maximum and then start going down
could you possibly try? i'm getting a linear graph which is really absurd..
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