In single-variable calculus, the derivative tells us how a function changes at a point - how steep the hill is under your feet. But as we step into higher dimensions, the concept evolves...
When is a function said continuous? What conditions must a function satisfy to be considered continuous?
A formal definition of functions. And when do we call a function linear, affine, or quadratic?
A coordinate system is "a way to define locations in space", typically using numbers or coordinates. It's an arrangement of lines or curves that define the position of points or other geometric elements...
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