Re: [sympy] Simplifying trigonometric expression

I think replace doesn't match subexpressions in an Add, because it isn't a subtree in the expression tree. This sort of thing needs to be improved. This workaround seems to work In [23]: c = Wild('c', exclude=[sin(x), cos(x)]) In [24]: expr.replace(a*sympy.sin(b)**2+a*sympy.cos(b)**2 + c, a +

Re: [sympy] Simplifying trigonometric expression

On 18 February 2016 at 09:43, Paul Royik wrote: > I'm trying to simplify a*cos(b)**2+a*sin(b)**2 to a > > So, I write > > a = sympy.Wild('a') > b = sympy.Wild('b') > expr = 49*cos(x)**2+49*sin(x)**2 + 5 > expr.replace(a*sympy.sin(b)**2+a*sympy.cos(b)**2, a, exact=True) >

[sympy] Simplifying trigonometric expression

I'm trying to simplify a*cos(b)**2+a*sin(b)**2 to a So, I write a = sympy.Wild('a') b = sympy.Wild('b') expr = 49*cos(x)**2+49*sin(x)**2 + 5 expr.replace(a*sympy.sin(b)**2+a*sympy.cos(b)**2, a, exact=True) But this doesn't work. expr is unchanged. -- You received this message because you are