Posted by jay on Saturday, October 15, 2011 at 10:03am.
Did you try just following the instructions?
They seem pretty straightforward.
For the end results, try ± large values
e.g. let x=1000 and x = -1000
wouldn't both x^4 become huge for both values, so what happens to the y value at those far-out values of x ?
notice that the second function starts with y = x^3 ...
when x = 1000 , y = +1000000000
when x = -1000 , y = (-1000)^3 = -1000000000
what does that tell you about the position of y for huge negative values of x ?
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