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09/28/15 (Mon) 18:35:04 No.3101
Second year engineering student here,
if I have a quadratic function, a parabola,
would the parabola automatically be inverted if I use -x instead of x?
09/28/15 (Mon) 19:44:00 No.3102
>>3101
no because a parabola is an even function; f(x) = f(-x).
09/28/15 (Mon) 23:40:13 No.3103
Test
>>3103
sage 09/30/15 (Wed) 00:03:47 No.3116
the graph is mirrored horizontally.
>>3102
thats not true for every quadratic function, for example the graph of (x+1)^2 is shifted to the left but the graph of (-x+1)^2 is shifted to the right.
09/30/15 (Wed) 00:04:34 No.3117
>>3116
>sage in subject
why did i do this
09/30/15 (Wed) 19:18:45 No.3119
no, that's f(-x). If you make the function negative -f(x) it will do what you want.