Posted by Cyndy f on Tuesday, May 22, 2012 at 12:23pm.
Suppose that f(A,B,C) means A2C + (1/2)AB
A. Find f(2,3,11)
B. Find f(D,5,D)
C. Find f(3,4,f(5,7,4))

Math  Reiny, Tuesday, May 22, 2012 at 12:45pm
just do what it says...
f(A,B,C) = A2C + (1/2)AB
f(2,3,11) = 2 2(11) + (1/2)(2)(3)
= 2 + 22 + 3 = 27
f(D,5,D) = D  2D + (1/2)(D)(5)
= D  2D + (5/2)D = (3/2)D or 3D/2
for the last one,
f(5,7,4) = ?
then f(3,4,? ) = ....
you try it.
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