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+# Basic math operations​
+{:.no_toc}
+
+<nav markdown="1" class="toc-class">
+* TOC
+{:toc}
+</nav>
+
+Questions to [David Rotermund](mailto:davrot@uni-bremen.de)
+
+## [Basic math operations​](https://docs.python.org/3/library/stdtypes.html#numeric-types-int-float-complex​)
+
+Order of operations​:
+1. Parentheses
+2. Exponents
+3. Multiplication/Division
+4. Addition/Subtraction
+
+|Operator​|Description​|
+|---|---|
+|x + y​|sum of x and y​|
+|x - y​|difference of x and y​|
+|x * y​|product of x and y​|
+|x / y​|quotient of x and y​|
+|x // y​|floored quotient of x and y​|
+|x % y​|remainder of x / y​|
+|-x​|x negated​|
+|+x​|x unchanged​|
+
+|Operator|Description​|
+|---|---|
+|abs(x)​|absolute value or magnitude of x​|
+|int(x)​|x converted to integer​|
+|float(x)​|x converted to floating point​|
+|complex(re, im)​|a complex number with real part re, imaginary part im. im defaults to zero.​|
+|c.conjugate()​|conjugate of the complex number c​|
+|divmod(x, y)​|the pair (x // y, x % y)​|
+|pow(x, y)​|x to the power y​|
+|x ** y​|x to the power y​|
+
+## "True division"
+
+```python
+print(5 / 2)​ # -> 2.5
+print(6 / 2)​ # -> 3.0
+```
+
+## “Floor division”
+
+```python
+print(5 // 2)​ # -> 2
+print(6 // 2)​ # -> 3
+```
+
+## [Bitwise Operations on Integer Types​](https://docs.python.org/3/library/stdtypes.html?highlight=elif#bitwise-operations-on-integer-types​)
+
+
+|Operation​|Result​|
+|---|---|
+|x \| y​| bitwise or of x and y​|
+|x ^ y​|bitwise exclusive or of x and y​|
+|x & y​|bitwise and of x and y​|
+|x << n​|x shifted left by n bits​|
+|x >> n​|x shifted right by n bits​|
+|~x​|the bits of x inverted​|
+
+## [More math operations​ (math lib)](https://docs.python.org/3/library/math.html​)
+
+You need to include the math lib for that! (Only once per .py file and in the beginning of the file)
+
+However, don't get used to it. As a data scientist you will not use it. You will use Numpy. 
+
+```python
+import math
+print(math.cos(math.pi))​
+```
+
+### Examples
+
+|[Number-theoretic and representation functions](https://docs.python.org/3/library/math.html#number-theoretic-and-representation-functions)|
+|---|
+|math.ceil(x)​|
+|math.comb(n, k)|
+|math.fabs(x)​|
+|math.factorial(n)|
+|math.floor(x)​|
+|math.fmod(x, y)​|
+|math.fsum(iterable)​|
+|math.isclose(a, b, *, rel_tol=1e-09, abs_tol=0.0)|
+|math.isfinite(x)​|
+|math.isinf(x)​|
+|math.isnan(x)|
+|math.perm(n, k=None)|
+|math.prod(iterable, *, start=1)​|
+|math.trunc(x)​|
+
+|[Constants](https://docs.python.org/3/library/math.html#constants)|
+|---|
+|math.pi​|
+|math.e​|
+|math.inf​|
+|math.nan​|
+
+|[Power and logarithmic functions](https://docs.python.org/3/library/math.html#power-and-logarithmic-functions)|
+|---|
+|math.cbrt(x)​|
+|math.exp(x)​|
+|math.exp2(x)​|
+|math.expm1(x)|
+|math.log(x[,base])​|
+|math.log1p(x)|
+|math.log2(x)​|
+|math.log10(x)​|
+|math.pow(x, y)​|
+|math.sqrt(x)​|
+
+
+|[Trigonometric functions](https://docs.python.org/3/library/math.html#trigonometric-functions)|
+|---|
+|math.acos(x)​|
+|math.asin(x)​|
+|math.atan(x)​|
+|math.atan2(y, x)​|
+|math.cos(x)​|
+|math.sin(x)​|
+|math.tan(x)​|
+|math.dist(p, q)​|
+
+|[Angular conversion](https://docs.python.org/3/library/math.html#angular-conversion)|
+|---|
+|math.degrees(x)​|
+|math.radians(x)​|
+
+|[Hyperbolic functions](https://docs.python.org/3/library/math.html#hyperbolic-functions)|
+|---|
+|math.acosh(x)​|
+|math.asinh(x)​|
+|math.atanh(x)​|
+|math.cosh(x)​|
+|math.sinh(x)​|
+|math.tanh(x)​|
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