import numpy as np import matplotlib.pyplot as plt x=np.linspace(-np.pi/2,np.pi/2,1000) y=np.sin(x) plt.plot(x,y) Out[4]: [ ] 
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Math
When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$ Hi $2^2$ print(__doc__)
The World as I See It by Albert Einstein
THE WORLD AS I SEE IT Albert Einstein PREFACE TO ORIGINAL EDITION Only individuals have a sense of responsibility. --Nietzsche This book does not represent a complete collection of the articles, addresses, and pronouncements of Albert Einstein; it is a selection made with a definite object-- namely, to give a picture of a man. To-day this man is being drawn, contrary to his own intention, into the whirlpool of political passions and contemporary history. As a result, Einstein is experiencing the fate that so many of the great men of history experienced: his character and opinions are being exhibited to the world in an utterly distorted form. To forestall this fate is the real object of this book. It meets a wish that has constantly been expressed both by Einstein's friends and by the wider public. It contains work belonging to the most various dates-- the article on "The International of Science" dates from the year 1922, the address on "The Principles of Scientifi...