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Friday, October 25, 2013

SP#3: Unit I Concept 1 - Graphing Exponential Functions and Identifying Key Parts




Be sure to carefully plug the graph into the calculator to find your key points. Also, be sure that you write your range correctly. Negative infinity always goes before your asymptote.

Thursday, October 17, 2013

SV#3: Unit H Concept 7 - Finding Logs Given Approximations

To watch my video, click HERE.

In order to fully understand this concept, you need to look out for exponents in a log.  If the number after your base has an exponent attached, you need to bring it to the front of the "log."  Also, you need to know how to expand your log accurately. The numbers from your numerator will be positive, and the numbers from your denominator will be negative. 

Tuesday, October 8, 2013

SV#2: Unit G Concepts 1-7 - Finding Key Parts and Graphing Rational Functions

To watch my video, click HERE.

This video goes over Unit G Concepts 1-7, which is finding all parts of a rational function. My function is f(x)= (x^3-x^2-20x)/(x^2-3x-10). This is a slant asymptote.  You will also need to find the vertical asymptote, holes, domain (with interval notation), and y-intercept. After doing so, graph it!

You may want to look out for what you plug your zeroes into (Yes, I messed up on the x-intercepts, but I fixed it!) It may be confusing knowing whether you plug into the x or y. Just remember Mrs. Kirch's chants! Also, make sure you trace on your calculator correctly. It's an approximation, but you still want your graph to look correct.