double 11

1 files changed, 19 insertions, 0 deletions

diff --git a/double_11.py b/double_11.py
new file mode 100644
index 0000000..118cfb7
--- /dev/null
+++ b/double_11.py
@@ -0,0 +1,19 @@
+
+import numpy as np
+import matplotlib.pyplot as plt
+
+years = [y+2009 for y in range(11)]
+gmvs = [0.5, 9.36, 52, 191, 350, 571, 912, 1207, 1682, 2135, 2684]
+
+
+def polynomial(xs, ys, n):
+    f = np.polyfit(xs, ys, n)
+    def func(x):
+        return sum(f[i]*x**(n-i)for i in range(n+1))
+    return func
+
+f = polynomial(years, gmvs, 3)
+print(f(2020))
+
+plt.plot(years, gmvs, marker='o')
+plt.show()
\ No newline at end of file