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In [59]: from IPython.display import Math Math(r'F(k) = \int_{-\infty}^{\infty} f(x) e^{2\pi i k} dx')
from IPython.display import Math Math(r'F(k) = \int_{-\infty}^{\infty} f(x) e^{2\pi i k} dx')
Out[59]: $$F(k) = \int_{-\infty}^{\infty} f(x) e^{2\pi i k} dx$$
In [5]: $$c = \sqrt{a^2 + b^2}$$
$$c = \sqrt{a^2 + b^2}$$
File "<ipython-input-5-9622fe7da255>", line 1 $$c = \sqrt{a^2 + b^2}$$ ^ SyntaxError: invalid syntax