|
Command |
Summary |
Online Documentation |
|
Rational() |
Define a rational expression you wish to keep rather than actually dividing. |
https://docs.sympy.org/latest/tutorial/gotchas.html#two-final-notes-and |
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sum() or Sum() |
Sum a list of numbers. NOTE for infinite series, the Sum command with .doit may work better. |
https://docs.sympy.org/latest/modules/concrete.html#concrete-class-reference |
|
summation() |
Computes a summation with other variables in it (i.e., a power series!) |
https://docs.sympy.org/latest/modules/concrete.html#sympy.concrete.summations.summation |
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apart() |
The partial fraction decomposition of an expression |
https://docs.sympy.org/latest/tutorial/simplification.html#apart |
|
arange() |
Generates an equally-spaced array for numeric computation/plotting (in NUMPY) |
https://docs.scipy.org/doc/numpy/reference/generated/numpy.arange.html |
|
cumsum() |
Generates the cumulative sum of the elements of a list. (i.e., the partial sums!) |
https://docs.scipy.org/doc/numpy/reference/generated/numpy.cumsum.html |
|
.evalf() |
Evaluate to floating point |
https://docs.sympy.org/latest/tutorial/basic_operations.html#evalf |
|
factor() |
Factor a symbolic expression |
https://docs.sympy.org/latest/tutorial/simplification.html#factor |
|
integrate() |
Integrate a function |
https://docs.sympy.org/latest/tutorial/calculus.html#integrals |
|
nsolve() |
Numerically solve an equation given an initial guess |
https://docs.sympy.org/latest/modules/solvers/solvers.html |
|
plot() |
Plot a function |
https://docs.sympy.org/latest/modules/plotting.html#plotting-function-reference |
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plot() |
Numeric plotting tool; good for plotting points (sequences). In MATPLOTLIB.PYPLOT |
https://matplotlib.org/tutorials/introductory/pyplot.html (NOTE the import command-this is required before running the command to distinguish this command from the sympy.plot command! The “as plt” is used to simplify future typing of the command.) |
|
print() |
Display variable values and text output |
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range(a,b) |
creates a list of integers from a to b-1 (NOTE!) |
https://docs.sympy.org/latest/modules/sets.html#range
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.simplify() or simplify() |
Simplify a symbolic expression |
https://docs.sympy.org/latest/tutorial/simplification.html#simplify |
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solve() |
Symbolically solve an equation |
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.subs() |
Substitute value(s) into an expression |
https://docs.sympy.org/latest/tutorial/basic_operations.html#substitution |
|
sum() |
Sum a list of numbers. |
https://docs.sympy.org/latest/modules/concrete.html#concrete-class-reference |
|
symbols() |
Define a symbolic variable (with optional properties, such as real=true or positive=true) |
https://docs.sympy.org/latest/tutorial/intro.html#a-more-interesting-example |
|
ylim |
Sets the ymin and ymax of a symbolic plot (within the plot command) |