Graphs of Functions and Algebra - Interactive Tutorials
Free tutorials to explore important topics in precalculus such as quadratic, rational, exponential, logarithmic, trigonometric, polynomial, absolute value functions and their graphs are included. Equations of lines, circles, ellipses, hyperbolas, and parabolas are also explored interactively. Graph shifting, scaling, and reflection are also included. The definition and properties of inverse functions are thoroughly investigated. A graphical approach to 2 by 2 systems of equations is included.
Linear Functions. A tutorial to explore the graphs, domains and ranges of linear functions.
Square Root Functions. Square root functions of the form
f(x) = a √(x - c) + d and the characteristics of their graphs such as domain, range, x intercept, y intercept are explored interactively.
Cube Root Functions. Cube root functions of the form f(x) = a (x - c)^{ 1/3} + d and the properties of their graphs such as domain, range, x intercept, y intercept are explored interactively using an applet.
Cubing Functions. Graphs of the cubing functions of the form f(x) = a (x - c)^{ 3} + d as well as their properties such as domain, range, x intercept, y intercept are explored interactively using an applet.
Graph, Domain and Range of Common Functions. A tutorial using a large window applet to explore the graphs, domains and ranges of some of the most common functions used in mathematics.
Quadratic Functions (general form). Quadratic functions and the properties of their graphs such as vertex and x and y intercepts are explored interactively using an applet.
Quadratic Functions(standard form). Quadratic functions in standard form f(x) = a(x - h)^{ 2} + k and the properties of their graphs such as vertex and x and y intercepts are explored, interactively, using an applet.
Periodic Functions. Graphical and analytical examples with solutions of periodic functions.
Absolute Value Functions. Absolute value functions definition and graph are explored, using an HTML5 app, by comparing the graphs of f(x) and h(x) = |f(x)|.
Exponential and Logarithmic Functions
Exponential Functions. Exponential functions are explored, interactively, using an HTML5 app. The properties such as domain, range, horizontal asymptotes, x and y intercepts are also investigated. The conditions under which an exponential function increases or decreases are also investigated.
Logarithmic Functions. An interactive large screen applet is used to explore logarithmic functions and the properties of their graphs such as domain, range, x and y intercepts and vertical asymptote.
Gaussian Function. The Gaussian function is explored by changing its parameters.
Logistics Function. The logistics function is explored by changing its parameters and observing its graph.
Compare Exponential and Power Functions. Exponential and power functions are compared interactively, using an applet. The properties such as domain, range, x and y intercepts, intervals of increase and decrease of the graphs of the two types of functions are compared in this activity.
Rational Functions
Rational Functions. Rational functions and the properties of their graphs such as domain, vertical and horizontal asymptotes, x and y intercepts are explored using an applet. The investigation of these functions is carried out by changing the parameters included in the formula of the function.
Graphs of Hyperbolic Functions. The graphs and properties such as domain, range and asymptotes of the 6 hyperbolic functions: sinh(x), cosh(x), tanh(x), coth(x), sech(x) and csch(x) are explored using an applet.
One to One Functions and Inverse of a Function
One-To-One functions. Explore the concept of one-to-one function using an applet. Several functions are explored graphically using the horizontal line test.
Explore graphs of functions. This is an educational software that helps you explore concepts and mathematical objects by changing constants included in the expression of a function. The idea is to introduce constants ( up to 10) a, b, c, d, f, g, h, i, j and k into expressions of functions and change them manually to see the effects graphically then explore.
Graph Transformations
Horizontal Shifting. An applet helps you explore the horizontal shift of the graph of a function.
Vertical Shifting. An applet that allows you to explore interactively the vertical shifting or translation of the graph of a function.
Horizontal Stretching and Compression. This applet helps you explore the changes that occur to the graph of a function when its independent variable x is multiplied by a positive constant a (horizontal stretching or compression).
Vertical Stretching and Compression. This applet helps you explore, interactively, and understand the stretching and compression of the graph of a function when this function is multiplied by a constant a.
Reflection of Graphs In x-axis. This is an applet to explore the reflection of graphs in the x-axis by comparing the graphs of f(x) (in blue) and h(x) = -f(x) (in red).
Reflection of Graphs In y-axis. This is an applet to explore the reflection of graphs in the y-axis by comparing the graphs of f(x)(in blue) and h(x) = f(-x) (in red).
Reflection Of Graphs Of Functions. This is an applet to explore the reflection of graphs in the y axis and x axes. Graphs of f(x), f(-x), -f(-x) and -f(x) are compared and discussed.
Slope Intercept Form Of The Equation Of a Line. The slope intercept form of the equation of a line is explored interactively using an applet. The investigation is carried out by changing parameters m and b in the equation of a line given by y = mx + b.
Find Equation of a Line - applet. An applet that generates two lines. One in blue that you can control by changing parameters m (slope) and b (y-intercept). The second line is the red one and it is generated randomly. As an exercise, you need to find an equation to the red line of the slope intercept form y = mx + b.
Equation of Parabola. An applet to explore the equation of a parabola and its properties. The equation used is the standard equation that has the form (y - k)^{ 2} = 4a(x - h)
Equation of a Circle. An applet to explore the equation of a circle and the properties of the circle. The equation used is the standard equation that has the form (x - h)^{ 2} + (y - k)^{ 2} = r^{ 2}.
Find Equation of Circle - applet. This is an applet that generates two graphs of circles. The equations of these circles are of the form (x - h)^{ 2} + (y - k)^{ 2} = r^{ 2}. You can control the parameters of the blue circle by changing parameters h, k and r. The second circle is the red one and it is generated randomly. As an exercise, you need to find an equation to the red circle.
Equation of Ellipse
Equation of an Ellipse. This is an applet to explore the properties of the ellipse given by the following equation (x - h)^{ 2} / a^{ 2} + (y - k)^{ 2} / b^{ 2} = 1.
Equation of Hyperbola
Equation of Hyperbola. The equation and properties of a hyperbola are explored interactively using an applet. The equation used has the form x^{ 2}/a^{ 2} - y^{ 2}/b^{ 2} = 1 where a and b are positive real numbers.
Polar Coordinates and Equations. The graphs of some specific polar equations are explored using java applet. You can also plot your own points generated using the polar equation under investigation.
Polynomials
Multiplicity of Zeros and Graphs of Polynomials. Explore the effects of multiplicities of zeros on the graphs of polynomials the form f(x) = a(x-z1)^{n1}(x-z2)^{n2}(x-z3)^{n3}(x-z4)^{n4} ....
Graphs of Polynomial Functions. This page includes an interactive app to help you explore polynomials of degrees up to 5 : f(x) = ax^{5} + bx^{4} + cx^{3} + dx^{2} + ex + f.
Third Degree Polynomials. A large screen applet helps you explore graphical properties of third order polynomials of the form: f(x) = ax^{3} + bx + c.