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Category Archives: Linear Equations
Linear Approximation
A function’s graph may have maximums, minimums, spikes and strange looking things. These characteristics can make it difficult to calculate the derivative of the function. Here’s where linear approximation can come to the rescue: Functions can be approximated by simple … Continue reading
Posted in Linear Equations, Pencast
Tagged differential calculus, linear approximation, tangent lines
5 Comments
Finding the Slope of a Line Expressed in Standard Form
Often when we are doing calculus, we have to find the slope of a line. I mean, the line that is tangent to a curve or function is the best estimator of that function when you are really close to … Continue reading
Posted in College Algebra, Linear Equations, Linear Functions, Lines, Media, Pencast
Tagged lines, slope, standard form
2 Comments
Finding Intercepts
Forget everything you know about rules for finding intercepts! If you can’t remember where the rule came from then it is wrong from the get go! Instead, work toward understanding the graphical nature of what an intercept is, and how … Continue reading
Posted in College Algebra, Factoring, Roots, Linear Equations, Linear Functions, Lines, Media, Pencast, Plotting, Graphs
Tagged intercepts, lines, roots
1 Comment
Solving 3×3 Linear Systems
Posted in College Algebra, Linear Algebra, Linear Equations
Tagged gauss elimination
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