diff --git a/resources/js/classes/calculator.js b/resources/js/classes/calculator.js
index 0e3779c..eed3121 100644
--- a/resources/js/classes/calculator.js
+++ b/resources/js/classes/calculator.js
@@ -24,6 +24,16 @@ class Calculator {
     squareRoot(number) {
       return Math.sqrt(number);
     }
+
+    absolute(number) {
+      return Math.abs(number);
+    }
+
+    factorial(n) {
+      if (n < 0) return NaN;
+      if (n <= 1) return 1;
+      return n * this.factorial(n - 1);
+    }
   }
   
   module.exports = Calculator;
\ No newline at end of file