Done with assignment 4

Java-Assignment-004.iml

@@ -5,6 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

src/Multadd.java

@@ -0,0 +1,43 @@
+import static java.lang.Math.*;
+
+
+public class Multadd {
+    public static void main(String[] args) {
+        //  multadd with doubles a, b, and c
+        double a = 1.0;
+        double b = 2.0;
+        double c = 3.0;
+        double result1 = multadd(a, b, c);
+        System.out.println(result1);
+
+        // sin(pi/4) + cos(pi/4)/2
+
+        double radians = PI / 4.0;
+        double sinNum = sin(radians);
+        double cosNum = cos(radians);
+        double result2 = multadd(sinNum, 1.0, cosNum / 2.0);
+        System.out.println(result2);
+
+        //log10(10) + log10(20)
+        double result3 = multadd(log10(10), 1.0,  log10(20));
+        System.out.println(result3);
+
+        //expSum
+        double y = 2.0;
+        double result4 = expSum(y);
+        System.out.println(result4);
+
+    }
+
+    public static double multadd(double a, double b, double c) {
+        return a * b + c;
+
+    }
+
+    public static double expSum(double y) {
+        double exp = exp(-y);
+        double sqrt = sqrt(1 - exp);
+        return multadd(y, exp, sqrt);
+    }
+}
+