13 lines
298 B
Ruby
13 lines
298 B
Ruby
module Math
|
|
|
|
# Returns real solution(s) of <code>+a+x + +b+ = +c+</code> or +nil+
|
|
# if no or an infinite number of solutions exist. If
|
|
# <code>c</code> is missing it is assumed to be 0.
|
|
#
|
|
# @author Josef Schugt
|
|
def self.linsolve(a, b, c = 0.0)
|
|
a == 0 ? nil : (c - b) / a
|
|
end
|
|
|
|
end
|