Function of a real variable

Space curve in 3d. The position vector r is parametrized by a scalar t. At r = a the red line is the tangent to the curve, and the blue plane is normal to the curve.

Kinematic quantities of a classical particle: mass m, position r, velocity v, acceleration a.

In mathematical analysis, and applications in geometry, applied mathematics, engineering, and natural sciences, a function of a real variable is a function whose domain is the real numbers ℝ, more specifically the subset of ℝ for which the function is defined.

单词	Real variables
释义	Real variables 英语百科 Function of a real variable In mathematical analysis, and applications in geometry, applied mathematics, engineering, and natural sciences, a function of a real variable is a function whose domain is the real numbers ℝ, more specifically the subset of ℝ for which the function is defined.
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Real variables

Function of a real variable