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March 15, 2026, 06:10:15 am
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naved_s9994

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Q
« on: November 04, 2009, 04:18:04 pm »
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Heffenan Exam 1 2007
Q 10 where y= 3x^2 +a and you have to find a.
Can anyone help, thanks!  :)
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naved_s9994

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Re: Q
« Reply #1 on: November 04, 2009, 04:47:58 pm »
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TrueTears

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Re: Q
« Reply #2 on: November 04, 2009, 04:54:46 pm »
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Quote from: naved_s9994
The graph of where a is a real constant has a normal with equation . Find the value of a



The gradient of the tangent must be





Thus

So the graph of passes through

Thus

Solve for a.
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naved_s9994

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Re: Q
« Reply #3 on: November 04, 2009, 05:00:35 pm »
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OMG Thanks soooo much!
I usually get these style of questions, but found this quite tricky.
Once again, thanks heaps!
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