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http://prntscr.com/n5h7l7

 

So 5.b)     how do I make the 16a2 positive?

 Mar 31, 2019
 #1
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The denominator cannot = 0   This would be 'non-permissable'

 

16-16a^2   cannot = 0

   Let's find where that is:

       16-16a^2 = 0

         16 = 16a^2

            1= a^2

                a = 1 or -1    <-------Non-permissable points

 Mar 31, 2019

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