diff --git a/Calculator.java b/collaboration/Calculator.java
similarity index 98%
rename from Calculator.java
rename to collaboration/Calculator.java
index c0f7fde..6ef9d9d 100644
--- a/Calculator.java
+++ b/collaboration/Calculator.java
@@ -1,5 +1,5 @@
 
-package 三角函数运算;
+package collaboration;
 
 import java.util.Scanner;
 import java.math.*;
diff --git a/collaboration/ExFunction.java b/collaboration/ExFunction.java
new file mode 100644
index 0000000..77766e9
--- /dev/null
+++ b/collaboration/ExFunction.java
@@ -0,0 +1,24 @@
+package collaborative;
+
+/**
+ * @author suyi
+ * @version 1.0
+ * @date 2020/8/6 18:00
+ */
+public class ExFunction {
+    public double x;
+
+    public ExFunction(double x) {
+        this.x = x;
+    }
+
+    public static void main(String[] args) {
+        ExFunction exFunction = new ExFunction(0);
+        System.out.println(exFunction.index());
+    }
+
+    public double index() {
+        return Math.exp(x);
+    }
+
+}
diff --git a/TrigonometricFunction.java b/collaboration/TrigonometricFunction.java
similarity index 96%
rename from TrigonometricFunction.java
rename to collaboration/TrigonometricFunction.java
index 7565a7c..624c663 100644
--- a/TrigonometricFunction.java
+++ b/collaboration/TrigonometricFunction.java
@@ -1,4 +1,4 @@
-package 三角函数运算;
+package collaboration;
 
 import java.math.*;
 public class TrigonometricFunction {