Correction previous example:
In [9]: sin(exp(a*x)).some_replace_func({exp(x): x})
Out[9]: sin(x**a)
On Friday, August 14, 2015 at 11:55:55 AM UTC+5:30, Adrián Ashley wrote:
>
> Hi Sartaj,
>
> I think you didn't understood my point. I am looking for mathematical
> substitution, not exact
> substitution.
>
> exp(5*x).xreplace({exp(5*x): sin(5*x)}) is just a mere example of usage of
> xreplace. I am not
> looking for exact replacement. the exponent can be anything
>
> For example:
>
> >>> sin(exp(x)).some_replace_func({exp: x})
>
> >>> sin(x)
>
> >>> exp(5*x).some_replace_func({exp(x): sin(x)})
> >>> exp(5*x)
>
>
> Thanks,
> Best,
>
> Adrian
>
> On Friday, August 14, 2015 at 1:48:44 AM UTC+5:30, Sartaj Singh wrote:
>>
>> Try this,
>>
>> >>> exp(5*x).xreplace({exp(5*x): sin(5*x)})
>> sin(5*x)
>>
>> On 14 August 2015 at 00:24, Adrián Ashley <[email protected]> wrote:
>>
>>> Hello,
>>>
>>> How can I substitute/replace something mathematically from an expression:
>>>
>>> For example:
>>>
>>> >>> exp(5*x).xreplace({exp(x): sin(x)})
>>> >>> exp(5*x) # I would expect sin(x)**5 here
>>>
>>>
>>> In better way to do the above thing?
>>>
>>> Thanks,
>>> Best,
>>>
>>> --
>>> Adrian
>>>
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>>
>>
>>
>> --
>> Regards
>> *Sartaj Singh*
>>
>> *Mathematics and Computing*,
>> Indian Institute of Technology,
>> Varanasi - 221 005 INDIA
>>
>> E-mail: [email protected], *[email protected]*
>>
>
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