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Thanks a lot Bob and Bobbym. I have done this many times before but the way the question was written confused me a bit
will do nicely.
(But using the 'a' and 'b' from the new quadratic, of course.)
Hi Bob. Differential calculus is not part of my course this year at all. So I can find x either by completing the square or?
If i'm asking for help too much lately please let me know. I have exams in 3 weeks so trying to get everything cleared up before the exam.
is a quadratic there's another way to get the maximum value.
I've put the graph below. As you can see it does have a maximum value. Would you be able to work out the x, at this point?
Hi Bob. I did exactly that up to the point
So you need
Can you take over from here?
Hi Bob I have the parabola and lines equations. So to find the maximum I subtracted the line's equation from the parabola's equation but from here i'm not sure.
Hi. I am a bit confused with this question the question is "Find the coordinates of M when BA is a maximum" Should I subtract the straight line from the parabola and thenI don't understand how BA has any effect on M? Doesn't M just stay where it is on the x-axis?
Thanks a lot in advance