Marginless Domain and Range Cards

I was intrigued by Sarah Carter's Domain and Range Cards on her Math=Love blog. I was afraid I would lose a lot of time having my students cut out the cards, so I made border-less cards with functions my Pre-Calculus students will see throughout the year. Pages 1 and 2 are the framework for the [...]

By | 2017-11-13T22:01:53+00:00 October 23rd, 2017|Algebra II, PreCalculus|0 Comments

Combinations of Functions and Composite Functions

Composite functions are a combination of two functions. The traditional math course introduces them like this: Let f and g be functions with overlapping domains. Then for all x common to both domains: (f + g)(x) = f(x) + g(x) (f - g)(x) = f(x) - g(x) (fg)(x) = f(x) · g(x) (f/g)(x) = f(x) / [...]

By | 2017-11-13T22:02:00+00:00 August 26th, 2015|PreCalculus, Statistics|0 Comments

Graphical Symmetry

There are three types of graphical symmetry you may be responsible for: x-axis, y-axis, and origin. Knowing the properties of symmetry can help you when sketching complex graphs. x-Axis Symmetry If an equation or function is symmetric with respect to the x-axis. you can fold the paper it is graphed on along the x-Axis and [...]

By | 2017-11-13T22:02:00+00:00 August 16th, 2015|PreCalculus|0 Comments

Could Nebraska Rely Exclusively on Wind Energy in Your Lifetime?

President Obama announced his carbon pollution standards for power plants on 8/03/2015. In it he outlines a 32% cut in carbon dioxide emissions by 2030. Currently, Nebraska gets about 72% of its electricity from coal. According to the American Wind Energy Association, Nebraska has the potential of meeting more than 118 times the state's current electrical [...]

By | 2017-11-13T22:02:01+00:00 August 3rd, 2015|Graphing Calculator, PreCalculus|0 Comments