Math Arguments

Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.

Taxonomy:

Select by Number:

Browse:

This is item #

185
Postable Link:
Item 185

Which values of x do we choose? Radicals

For the following functions, think about "How to graph like a math teacher." Math teachers want to sketch graphs quickly and efficiently and choose values of x that work "nicely" in the equation and  generate integer values of y, thus making it easier to graph.

Which points in the graph
- are best found by inspection?
- are best found by substitution?
- are best found by symmetry?

\(y = \sqrt{x+2}\)

\(y = \sqrt{1-x}\)

\(y = \sqrt[3" style="max-width:550px;"/>
{2x+1}\)

What are your favorite examples of this?


.
Search for similar questions:

Smart Substitution
T.R.Milne
ALG2

Source: T.R.Milne
More Information:


Powered by
++