(f, x)
return res
Try to guess sensible rewritings for integrand f(x).
Try to guess sensible rewritings for integrand f(x).
Try to guess sensible rewritings for integrand f ( x ) .
def _guess_expansion(f, x):
    """ Try to guess sensible rewritings for integrand f(x). """
    from sympy import expand_trig
    from sympy.functions.elementary.trigonometric import TrigonometricFunction
    from sympy.functions.elementary.hyperbolic import HyperbolicFunction
    res = [(f, 'originial integrand')]

    expanded = expand_mul(res[-1][0])
    if expanded != res[-1][0]:
        res += [(expanded, 'expand_mul')]

    expanded = expand(res[-1][0])
    if expanded != res[-1][0]:
        res += [(expanded, 'expand')]

    if res[-1][0].has(TrigonometricFunction, HyperbolicFunction):
        expanded = expand_mul(expand_trig(res[-1][0]))
        if expanded != res[-1][0]:
            res += [(expanded, 'expand_trig, expand_mul')]

    return res
def _guess_expansion ( f , x ) : from sympy import expand_trig from sympy . functions . elementary . trigonometric import TrigonometricFunction from sympy . functions . elementary . hyperbolic import HyperbolicFunction res = [ ( f , 'originial integrand' ) ] expanded = expand_mul ( res [ - 1 ] [ 0 ] ) if expanded != res [ - 1 ] [ 0 ] : res += [ ( expanded , 'expand_mul' ) ] expanded = expand ( res [ - 1 ] [ 0 ] ) if expanded != res [ - 1 ] [ 0 ] : res += [ ( expanded , 'expand' ) ] if res [ - 1 ] [ 0 ] . has ( TrigonometricFunction , HyperbolicFunction ) : expanded = expand_mul ( expand_trig ( res [ - 1 ] [ 0 ] ) ) if expanded != res [ - 1 ] [ 0 ] : res += [ ( expanded , 'expand_trig, expand_mul' ) ] return res