The discussion revolves around identifying which of several mathematical relations does not qualify as a function. Participants explore the definitions and characteristics of functions, particularly focusing on the conditions under which a relation can be expressed as a function of x.
Participants express differing views on how to approach the problem, with no consensus on which specific relation fails the function test. The discussion remains unresolved regarding the identification of the non-function.
Some participants reference the vertical line test and the need to express relations in the form y = f(x), but the application of these concepts is not fully explored or agreed upon.
The essential thing about a function is that there should be only one value of $y$ for each value of $x$. Can you see one of those formulas where there might be more than one value of $y$ for a given value of $x$?melissax said:Hi, I have a question and couldn't solve.
Can you help me?
Which one isn't function how i can show?
(a) $y = |x^3 + 5|$
(b) $y = x^2 + \sqrt(x) -\sin(x)$
(c) $y^2 = (x-5)^2 + 10$
(d) $y^3 = x + 4$
Thank you?
You should have been taught the 'vertical line test' ...melissax said:Hi, I have a question and couldn't solve.
Can you help me?
Which one isn't function how i can show?
(a) y = |x^3 + 5|
(b) y = x2 + sqrt(x) -sin(x)
(c) y2 = (x-5)^2 + 10
(d) y3 = x + 4
Thank you?