
functions - How to perform vertical line test algebraically ...
Jan 18, 2021 · 2 I understand how a function should have one value mapped to a single value in the range. Thus, when graphing the function I understand how a vertical line can determine if a point or …
Why is an ellipse, hyperbola, and circle not a function?
The vertical line test is a graphical way to show that for a graph of a function mapping one variable to another in the Cartesian plane. There is no reason why a function can't have any of the following …
calculus - How can a "proper" function have a vertical slope ...
Oct 5, 2019 · As I understand, in the graph I pasted we cannot take the derivative of x=0 because the slope is vertical, hence we cannot see the instantaneous rate of change of x to y as the y value is not …
Is the slope of a vertical line infinity or undefined?
A vertical line is not a function and it cannot have a derivative. If you describe the function of x with respect to y, then sure the derivative is $ {dx\over dy} = 0$.
functions - Vertical line test - Mathematics Stack Exchange
The highlighted proposition is one way of describing the vertical line test, which determines whether f f is a function. If there is one and only point of intersection between x = a x = a and f(x) f (x), then f f is a …
Defining vertical tangent lines - Mathematics Stack Exchange
Vertical tangents are more difficult to define when we take all y as a function of x because (unless the function is one-to-one) it is difficult to define a vertical cusp.
Confusion with the vertical line test of functions
It states that To use the vertical line test,"draw a line parallel to the y-axis for any chosen value of x. If the vertical line you drew intersects the graph more than once for any value of x then the graph is not …
Difference between horizontal and vertical line tests.
Jun 17, 2014 · Trying to understand what the differnce is between a vertical and horizontal line test. If an equation fails the vertical line test, what does that tell you about the graph?
Is a vertical line injective? - Mathematics Stack Exchange
Sep 10, 2020 · A vertical line does represent a relation, and the injectivity property is certainly applicable to relations. However, although some authors use the phrase "injective relation" for such cases (even …
Is a function that has a vertical tangent line a function?
Since a function can only have one value in the range per domain, and this function would at least two range values (the points right above each other) for the same domain value, wouldn't it violate the …