Posted by Melissa on Saturday, October 22, 2011 at 7:21pm.
The sum of two numbers is 16 . What is the largest possible product between these numbers

math  Ms. Sue, Saturday, October 22, 2011 at 7:25pm
1 + 16
2 + 14
3 + 13
4 + 12
5 + 11
6 + 10
7 + 9
8 + 8
Which of those produce the greatest product?

math  Damon, Saturday, October 22, 2011 at 8:18pm
y = x (16x) = 16x  x^2
dy/dx = 0 at max = 16  2x
so
x = 8
8*8

math  Damon, Saturday, October 22, 2011 at 8:25pm
or find vertex of that parabola (y = 16xx^2) if you do not know derivatives.
x^2  16 x = y
x^2  16 x + 64 = y+64
(x8)^2 = (y+64)
x = 8

math  jade, Monday, February 13, 2017 at 6:37pm
eight
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