add substitution and differentiation

2026-04-13 19:58:40 +03:00
parent 1fff529e83
commit 037c34b38e
3 changed files with 31 additions and 12 deletions
--- a/lib/ruby_algebra/interpreter.rb
+++ b/lib/ruby_algebra/interpreter.rb
@@ -50,7 +50,7 @@ module RubyAlgebra
          @locals[command.lhs] = result
          return "#{command.lhs} = #{result}"
        when :subs
-          result = operand1.evaluate(operand2)
+          result = operand1.substitute(operand2)
          @locals[command.lhs] = result
          return "#{command.lhs} = #{result}"
        end