Tell me, why is x = |y| NOT a function?
Also, would y = |x| be a function? If so, why?
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Tell me, why is x = |y| NOT a function?
Also, would y = |x| be a function? If so, why?
A function is where a value of x corresponds to exactly one value of y.Quote:
Originally Posted by sharkman
With this equation it is clear that f(-4) = f(4) and so is not a function
So, x = |y| means that y varies in terms of values and thus making this equation NOT a function, right?Quote:
Originally Posted by e^(i*pi)
Is that what makes it different from y = |x|?
Because you can plug in any value of x and you can be guaranteed to get exactly one value of y out the other end. That's what defines a function: every value of x has exactly one value of y.
Easily explained.Quote:
Originally Posted by Matt Westwood