Implement polynomial curve fitting in python and with TensorFlow (optionally).

1. sample the function curve of y=sin(x) with Gaussian noise

2. fit degree 3 and 9 curves in 10 samples

3. fit degree 9 curves in 15 and 100 samples

4. fit degree 9 curve in 10 samples but with regularization term

1. Programming lanuage: python
2. Optional package: tensorflow web
3. Plot the results in matplotlibIntroduction in Chinese Tutorial