什麼是向量？
既有大小也有方向。
大小？
|\vec{v}| = \sqrt{x^2 + y^2}。
向量加法？
分量相加。
點積？
\vec{a} \cdot \vec{b} = a_1 b_1 + a_2 b_2。
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.