Function: math[tangente] - computes tangent lines and tangent planes
Calling Sequence:
tangente(f, x=a);
tangente(f, x=a, y=b);
Parameters:
f -
expression in x or in x and y
x, y -
names
a, b -
points (numerical or symbolic values)
Description:
In the first form, tangente computes the tangent line of a function f in x at a point a.
In the second form it determines the tangent plane of a function f in x and y at x=a and y=b.
This function is part of the math package, and so can be used only after performing the command with(math) or with(math, tangente).
Examples:
> with(math, tangente):
> tangente(ln(x), x=1);
> tangente(x^2+y^2, x=1, y=2);
> tangente((x^2+y^2)*exp(-x), x=0, y=1);
> tangente(exp(x), x=t);
See Also:
math/normal , math/slopefn , math/lineangle , math/curveplot .
Version History:
Version 1.0 as of December 04, 1997