Sunday, October 19, 2025

T_Substitution

 So why was trigonometric substitution useful in our find the length of

the arc problem...Because it makes the math very easy:


                                                                           

source: Wikipedia, 'Trigonometric substitution', Russian language page.

*     *     *

Went back to the cubic spline problem, wondering what clamped beginning and

endpoints would be. The clamp is defined by specifying the slope we want at the

two points.

Gemini suggested I use the slopes in the current middle points, thus staying faithful to

the movement of the data...


                                                                        







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