gd1 | R Documentation |
First derivative of the cubic spline over an interval
[x0, x1]
.
gd1(x, x0, x1, y0, y1, s0, s1)
x |
A number between |
x0 |
Lower bound of the interval. |
x1 |
Upper bound of the interval. |
y0 |
Value of the spline at |
y1 |
Value of the spline at |
s0 |
Slope of the spline at |
s1 |
Slope of the spline at |
The value of first derivative of the interpolation at x
.
Thomas Blanchet, Juliette Fournier, Thomas Piketty
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