diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Java-Assignment-004.iml b/Java-Assignment-004.iml
index b46c0dd..7b67cbe 100644
--- a/Java-Assignment-004.iml
+++ b/Java-Assignment-004.iml
@@ -5,6 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
+    <orderEntry type="jdk" jdkName="21" jdkType="JavaSDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/src/Multadd.java b/src/Multadd.java
new file mode 100644
index 0000000..d36f37d
--- /dev/null
+++ b/src/Multadd.java
@@ -0,0 +1,23 @@
+public class Multadd {
+    public static double multadd (double a, double b,double c) {
+        return a * b + c;
+    }
+
+    public static double expSum (double x){
+        //use multadd to calculate xe^(-x) + sqrt(1 - e^(-x))
+        return multadd(x, Math.exp(-x), Math.sqrt(1 - Math.exp(-x)));
+    }
+    public static void main(String[] args) {
+        // test multadd by passing arguments a: 1.0, b: 2.0, c: 3.0
+        System.out.println(multadd(1.0, 2.0, 3.0));
+
+        //Calculate sin(pi/4) + cos(pi/4)/2 using multadd
+        System.out.println(multadd(Math.cos(Math.PI / 4), 0.5, Math.sin(Math.PI / 4)));
+
+        //Calculate log10(10) + log10(20) using multadd
+        System.out.println(multadd(1, Math.log10(10), Math.log10(20)));
+
+        //Calculate xe^(-x) + sqrt(1 - e^(-x)) where x = 2.5
+        System.out.println(expSum(2.5));
+    }
+}
\ No newline at end of file