(1/3<= x) & (x <= sqrt(pi))>>>relations = [(i.lhs, i.rel_op, i.rhs)foriin[i.canonicalforiineq.atoms(Relational)]]>>>relations_sorted =sorted(relations, key=lambdax:float(x[2]))# Sorting relations just to ensure consistent list order for docstring testing>>>relations_sorted [...
用户通常将字符串作为 SymPy 函数的输入(尽管 SymPy 开发人员普遍认为这应该被弃用),例如: >>>fromsympyimportsolve>>>solve('x**2 - 1') [-1,1] 当显式创建符号时,可以分配假设,这会影响solve()的行为: >>>x = Symbol('x', positive=True)>>>solve(x**2-1) [1] 当使用字符串输入 SymPy 将...
As seen, the symbols function can be used to make one or more variables with zero, one or more assumptions.We jump ahead for a second to illustrate, but here we see that solve will respect these assumptions, by failing to find solutions to these equations:...
Usingdynamicsymbols.t. However, using a general time symbol not tied as a function attribute seems to be preferred. Additionally, backward compatibility with check 1 is a bit messy. Using constantsympy.physics.vector.functions.TIME. However, this does not go well with backward compatibility for c...
If candidates for exponents are given, they are assumed to be sorted and the first one that is larger than the computed maximum will signal failure for the routine. If factor=True then simultaneous factorization of n is attempted since finding a factor indicates the only possible root for n....
One of the major developments this summer that I helped out with was the ability for anybody to build a conda package, and a site called Binstar where people can upload them (the beta code is “binstar in beta” with no quotes). Another thing that happened over the summer is that Al...
create the object and set its data. Because of sympy's## caching, tensors with different data need to be created as## classes with different names. So we just create a lighweight## subclass with a unique name (the number at the end gets## incremented every time we construct a tensor...
A symbol may be of more than one alphabets.>>> s=Symbol('side') >>> s**3 The above code snippet gives an output equivalent to the below expression −side3side3SymPy also has a Symbols() function that can define multiple symbols at once. String contains names of variables separated ...
浏览完整代码 来源:test_rigidbody.py 项目:A-turing-machine/sympy 示例8 def test_body_add_force(): # Body with RigidBody. rigidbody_masscenter = Point('rigidbody_masscenter') rigidbody_mass = Symbol('rigidbody_mass') rigidbody_frame = ReferenceFrame('rigidbody_frame') body_inertia = iner...
This is mostly provided as a convenience to save one from replacing the object with a Symbol and solving for that Symbol. It will only work if the specified object can be replaced with a Symbol using the subs method. >>> solve(f(x) - x, f(x)) [x] >>> solve(f(x).diff(x) ...