Plot up to four functions of x at once and explore them interactively: scroll or pinch to zoom, drag to pan, and hover to read exact values along the curves. Expressions use the same syntax as the scientific calculator — sin(x), x^2, ln(x), e^x and friends.
Each function gets its own color so intersections and relative behavior are easy to see, and the grid, axes and labels adapt to the zoom level. The plot re-renders instantly as you edit a formula.
Frequently asked questions
How many functions can I plot at once?
Up to four — each in its own color, all sharing one coordinate system.
How do I zoom in?
Scroll (or pinch on a touchscreen) over the point you care about; drag with the mouse or finger to pan.
What functions are supported?
The same set as the scientific calculator: powers, roots, exp, log, ln, trigonometry (DEG/RAD) and constants π and e.
中文说明
同时绘制最多四条关于 x 的函数曲线并进行交互式探索：滚轮缩放、拖拽平移、悬停读取曲线上的精确数值。表达式语法与科学计算器一致——sin(x)、x^2、ln(x)、e^x 等都可以直接输入。
每条函数使用独立的颜色，交点与相对走势一目了然；网格、坐标轴与刻度会随缩放级别自适应。修改公式时图像即时重绘。
常见问题
最多能同时画几条曲线？
最多四条，各有专属颜色，共用同一坐标系。
怎么放大图像？
在关心的位置滚动鼠标滚轮（触屏则双指捏合），拖拽即可平移。
支持哪些函数？
与科学计算器相同的函数集：乘方、开方、exp、log、ln、三角函数（DEG/RAD）以及常量 π 和 e。