Graph sketcher
Plot functions and look at their shape.
For checking your work after you’ve tried it yourself.
Step 1: Type a graph
Type a graph
Like x^2 - 4, y < |x|, x^2 + y^2 = 25 or r = 1 + cos(t).
Step 2: Move around
Move around
Drag, scroll or pinch, and use the sliders for a, b, c and k.
Step 3: Read the facts
Read the facts
Crossings, turning points and meeting points, then Do it by hand.
What it does.
Draws up to 10 graphs at once: functions, shaded inequalities, lines, points, equations in x and y, and polar and parametric curves. It lists where each graph crosses the axes, its peaks and dips, asymptotes and symmetry, and every point where two graphs meet.
When it helps.
Checking a sketch you drew, or seeing roughly where solutions lie before finding them exactly.
What it won’t do.
Points it finds are approximate, marked . Exact values need algebra.
Example.
has a peak at and a dip at .
Drag (or two fingers on a trackpad) to move. Scroll wheel, pinch or + and − to zoom. Arrow keys work too.
Functions
Type a function of x, or try an example.
0 of 10
Facts
For the part of each graph on screen. Numbers with ≈ are approximate; exact values need algebra.
Add a function to see its facts.
Where they meet
- Add a second graph to see where they meet.
Sketch it by hand
Add a function to see how to sketch it.