'Expr cos' diaporamas de présentation

SymPy A Symbolic Mathematics package in and for Python

SymPy A Symbolic Mathematics package in and for Python. Getting Started. x,y = symbols('x y') a = 2*x ? y a + y expand(a**3) factor(x**3+3*x**2+3*x+1) simplify(x**2-y**2-(x+y)*(x-y)). Substitution. expr = cos(x) + 1 expr.subs(x,y) expr.subs(x,0) expr = x**y expr = expr.subs(y,x**y)

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