什麼是極限？

從左邊、右邊和兩側趨近一個值

f(x) = \frac{x^2 - 1}{x - 1} 在x趨近1時趨近什麼值？

相關主題

什麼是導數？什麼是函數？二次方程式

Suggested Lessons

Slope Quadratic Equations Unit Circle Word Problems
什麼是極限？
函數在輸入趨近特定值時趨近的值。
為什麼不能直接代入？
有時得到0/0。
圖中的洞？
函數在某點無定義但有極限。
單側極限？
只從一個方向趨近。
What can it graph?
It can plot explicit, implicit, and parametric functions, add points and geometry, and animate sliders on the same graph.
Can I use voice or a photo?
Yes. You can talk to the tutor, upload a worksheet or handwritten problem, and let the graph update from that input.
Will it explain the steps?
Yes. The AI explains what it is drawing and why, so you see the answer on the graph instead of getting only a final number.