Graph Plotter (Browser Based)
y =
Zoom: + -
Axis
x: to withy: to
Instructions
You can use the browser based graph sketcher to sketch/draw the graph of most one to one functions (see the list of supported opperations below).
You can zoom in and out either by scrolling with your mouse wheel over the graph or using the plus and minus buttons in the controlls. You can move the area of the graph that you are looking at by clicking on and "dragging" the graph area.
Alternativley you can manually specify the x and y bounderies you want to use in the boxes in the controlls.
Note: This sketcher uses the html5 canvas element and hence only works on up to date browsers and DOESNT work on Internet Explorer.
To draw a graph of a function write it as a function of x (on the horizontal axis) in the box above and then click sketch. Note that it will draw any function as a one to one function so if you use a square root it will only show half of the solution. Also powers should be written using the pow(a,b) function for ab.
Below is a list fo the supported functions and operations which can be combined, if you are unsure of which order they will be executed use brackets
| Function/Operation | Description |
|---|---|
| + | addition: 2+3 will give 5 |
| - | subtraction of negative: 5-3 will give 2, 5+(-3) will also give 2 |
| * | multiplication: 2*3 will give 6 |
| / | division: 6/3 will give 2 |
| e | gives Euler's number (approximatley 2.71828) |
| pi | gives pi, the ratio of a circle diameter to its circumfrance (approximatley 3.141593) |
| abs() | gives the absolute value of whatever is between the brackets eg abs(-3) will give 3 |
| acos() | gives arccos or cos-1 of whatever is between the brackets |
| asin() | gives arcsine or sin-1 of whatever is between the brackets |
| atan() | gives arctan or tan-1 of whaterver is between the brackets |
| ceil() | rounds up or gives the ceiling of whatever is between the brackets |
| cos() | gives the cosine of the value between the brackets |
| exp() | gives ea if a is the value between the brackets |
| floor() | rounds down or finds the floor of whatever is between the brackets |
| ln() or log() | gives the natural log of whatever is between the brackets |
| pow() | pow(a,b) gives ab |
| round() | rounds the value between the brackets to the nearest integer |
| sin() | gives the sin of the value between the brackets |
| sqrt() | gives the square root of the value between the brackets |
| tan() | gives the tangent of the value between the brackets |
| Other functions | The sketcher works by evaluating the function as a javascript statement for different values of x, hence any valid javascript function for a number can also be used (such as the remaining function of the Math object) |
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