diff --git a/3.6.1/delta(nu)t.png b/3.6.1/delta(nu)t.png
index abef8e3..16b00a0 100644
Binary files a/3.6.1/delta(nu)t.png and b/3.6.1/delta(nu)t.png differ
diff --git a/3.6.1/laba.py b/3.6.1/laba.py
new file mode 100644
index 0000000..4b37190
--- /dev/null
+++ b/3.6.1/laba.py
@@ -0,0 +1,49 @@
+from re import X
+from matplotlib import pyplot as plt
+import numpy as np
+import scipy as sp
+import csv
+
+table1 = '1.csv'
+table2 = '2.csv'
+table3 = '3.csv'
+
+
+def open_CSV(filename):
+    with open('/home/dmitrii/Physics Labs/3.6.1/' + filename, newline="") as csvfile:
+        datareader = csv.reader(csvfile, delimiter=",", quotechar="|")
+        data = []
+        for row in datareader:
+            res = [float(i) for i in row]
+            data.append(res)
+        data = np.array(data)
+        return data
+
+
+def plot(arr, xlab, ylab, plotName):
+    x = arr[:, 0]
+    y = arr[:, 1]
+    params = np.polyfit(x, y, 1)
+    print("Next line:")
+    print("Approx line params:")
+    print(params)
+    plt.plot(x, x*params[0]+params[1], color='orange', linewidth=1)
+    plt.scatter(x, y, marker='+', s=200, color='green')
+    plt.xlabel(xlab, fontsize=20)
+    plt.ylabel(ylab, fontsize=20)
+    plt.title(plotName, fontsize=20)
+    plt.grid()
+    plt.show()
+
+
+def main(table1, table2, table3):
+    plot(table1, r'$\frac{1}{\tau}, 10^2$',
+         r'$\Delta \nu, Hz, 10^2$', r'$\Delta \nu(\frac{1}{\tau})$')
+    plot(table2, r'$f_{period}, Hz, 10^3$',
+         r'$\Delta \nu, Hz, 10^3$', r'$\Delta \nu(f_{period})$')
+    plot(table3, r'$\frac{A_{side}}{A_{main}}, 1$',
+         r'$m, 1$', r'$m(\frac{A_{side}}{A_{main}})$')
+
+
+if __name__ == '__main__':
+    main(open_CSV(table1), open_CSV(table2), open_CSV(table3))
diff --git a/3.6.1/m(A).png b/3.6.1/m(A).png
index c76264b..f28f629 100644
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