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- ## Orthogonal Polynomials
- **Description:**
- The OrthPol(KF, n, x) function computes orthogonal polynomials: Chebyshev, Laguerre, Hermite polynomials, and their derivatives using recurrence relations.
- **Parameters:**
- 1. KF - parameter specifying the orthogonal polynomial
- * KF = 1 for Chebyshev polynomial of the first kind
- * KF = 2 for Chebyshev polynomial of the second kind
- * KF = 3 for Laguerre polynomial
- * KF = 4 for Hermite polynomial
- 2. n - integer order of orthogonal polynomial.
- 3. x - argument of orthogonal polynomial.
- **Return:**
- Vector with values of the orthogonal polynomial (the first place) of order n with argument x, and its first derivatives (the second place).
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