diff --git a/src/com/nummethods/lr5/LR_5.java b/src/com/nummethods/lr5/LR_5.java
index fc89a8d..02a916e 100644
--- a/src/com/nummethods/lr5/LR_5.java
+++ b/src/com/nummethods/lr5/LR_5.java
@@ -1,5 +1,6 @@
 package com.nummethods.lr5;
 
+import com.nummethods.lr3.CubicSpline;
 import java.awt.Color;
 import java.awt.Dimension;
 import java.awt.Graphics;
@@ -45,7 +46,7 @@ public class LR_5 extends JFrame {
         super("LR_5");
         setDefaultCloseOperation(DISPOSE_ON_CLOSE);
         
-        final Integral integral = var10;
+        final Integral integral = var2;
         
         IntegrateMethod runge = new RungeKuttaMethod(integral);
         System.out.println("Runge-Kutta: " + runge.calculate(integral.getN()));
@@ -96,12 +97,14 @@ public class LR_5 extends JFrame {
     }
     
     private double findPoint(Point2D[] array, double x) {
-        for (int i = 0; i < array.length; i++) {
+        CubicSpline spline = new CubicSpline(array);
+        return spline.interpolate(x);
+        /*for (int i = 0; i < array.length; i++) {
             double dx = Math.abs( array[i].getX() - x );
             if (dx < 0.001) {
                 return array[i].getY();
             }
         }
-        return 0;
+        return 0;*/
     }
 }