Title

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And this bold not bold because $sin(x \sqrt{ 4 \pi x^5}) $ is

$$ s = \frac{Q}{2 \pi kD} \ln \left( \frac{R}{r} \right)$$

etc

$$ W \left(u, \frac{\rho}{\lambda}\right) = \intop_u^\infty $$$$\frac{e^{-y - \frac{\frac{\rho}\{lambda}}{y}}}{y} dy $$



In [7]:

    
import numpy as np
import matplotlib.pyplot as plt









    



---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
~/anaconda3/lib/python3.6/site-packages/numpy/core/__init__.py in <module>
     16 try:
---> 17     from . import multiarray
     18 except ImportError as exc:

~/anaconda3/lib/python3.6/site-packages/numpy/core/multiarray.py in <module>
     13 
---> 14 from . import overrides
     15 from . import _multiarray_umath

~/anaconda3/lib/python3.6/site-packages/numpy/core/overrides.py in <module>
      6 
----> 7 from numpy.core._multiarray_umath import (
      8     add_docstring, implement_array_function, _get_implementing_args)

ImportError: dlopen(/Users/Theo/anaconda3/lib/python3.6/site-packages/numpy/core/_multiarray_umath.cpython-36m-darwin.so, 2): Library not loaded: @rpath/libopenblas.dylib
  Referenced from: /Users/Theo/anaconda3/lib/python3.6/site-packages/numpy/core/_multiarray_umath.cpython-36m-darwin.so
  Reason: image not found

During handling of the above exception, another exception occurred:

ImportError                               Traceback (most recent call last)
<ipython-input-7-e0e1492b7973> in <module>
----> 1 import numpy as np
      2 import matplotlib.pyplot as plt

~/anaconda3/lib/python3.6/site-packages/numpy/__init__.py in <module>
    140     from . import _distributor_init
    141 
--> 142     from . import core
    143     from .core import *
    144     from . import compat

~/anaconda3/lib/python3.6/site-packages/numpy/core/__init__.py in <module>
     45 """ % (sys.version_info[0], sys.version_info[1], sys.executable,
     46         __version__, exc)
---> 47     raise ImportError(msg)
     48 finally:
     49     for envkey in env_added:

ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy c-extensions failed.
- Try uninstalling and reinstalling numpy.
- If you have already done that, then:
  1. Check that you expected to use Python3.6 from "/Users/Theo/anaconda3/bin/python",
     and that you have no directories in your PATH or PYTHONPATH that can
     interfere with the Python and numpy version "1.17.4" you're trying to use.
  2. If (1) looks fine, you can open a new issue at
     https://github.com/numpy/numpy/issues.  Please include details on:
     - how you installed Python
     - how you installed numpy
     - your operating system
     - whether or not you have multiple versions of Python installed
     - if you built from source, your compiler versions and ideally a build log

- If you're working with a numpy git repository, try `git clean -xdf`
  (removes all files not under version control) and rebuild numpy.

Note: this error has many possible causes, so please don't comment on
an existing issue about this - open a new one instead.

Original error was: dlopen(/Users/Theo/anaconda3/lib/python3.6/site-packages/numpy/core/_multiarray_umath.cpython-36m-darwin.so, 2): Library not loaded: @rpath/libopenblas.dylib
  Referenced from: /Users/Theo/anaconda3/lib/python3.6/site-packages/numpy/core/_multiarray_umath.cpython-36m-darwin.so
  Reason: image not found



In [8]:

    
x  = np.linspace(-3, 3, 100)
y = np.sin(x / 3) * np.sqrt(x ** 2)
print(x)
print(y)

plt.plot(x, y)









    



---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-8-139c888a5deb> in <module>
----> 1 x  = np.linspace(-3, 3, 100)

NameError: name 'np' is not defined



In [4]:

    
a = 3
b = 4
print(a + b)



In [3]:

    
a









    Out[3]:





3



In [ ]: