Question 614453
I am having a hard timfiguaring out what the  relative max and min. is. how to caculate it? I have a TI- 83 plus. question might be:

f(x)= 2-x^2
f'(x) = -2x 1st derivative
-2x = 0
x = 0 --> max, since the coeff of the x^2 term is negative.
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 or 
f(x)= x^3 +4x^2
f'(x) = 3x^2 + 8x = 0
x = 0, x = -8/3
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f"(x) = 6x + 8 2nd deriviative
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f"(0) = 8 --> local min
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f"(-8/3) = -8 --> local max
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