Method on @sym: logspace (a, b) ¶

Method on @sym: logspace (a, b, n) ¶

Return a symbolic vector of logarithmically-spaced points.

The result will be n points between 10^a and 10^b, which are equispaced on a logscale.

Examples:

logspace(sym(-2), 1, 4)
  ⇒ (sym) [1/100  1/10  1  10]  (1×4 matrix)
logspace(sym(0), 3, 4)
  ⇒ (sym) [1  10  100  1000]  (1×4 matrix)

If omitted, n will default to 50. A special case occurs if b is pi; this gives logarithmically-spaced points between 10^a and pi instead:

logspace(0, sym(pi), 4)
  ⇒ (sym 1×4 matrix)
      ⎡   3 ___   2/3   ⎤
      ⎣1  ╲╱ π   π     π⎦

logspace can be combined with vpa:

logspace(vpa(-1), vpa(2), 5)'
  ⇒ ans = (sym 5×1 matrix)
      ⎡               0.1                ⎤
      ⎢                                  ⎥
      ⎢0.56234132519034908039495103977648⎥
      ⎢                                  ⎥
      ⎢3.1622776601683793319988935444327 ⎥
      ⎢                                  ⎥
      ⎢17.782794100389228012254211951927 ⎥
      ⎢                                  ⎥
      ⎣              100.0               ⎦

See also: @@sym/linspace.

Package: symbolic