I am also Interested in getting the solution for this.
*AMiT Kumar*
On Friday, August 14, 2015 at 12:08:25 PM UTC+5:30, Gaurav Dhingra wrote:
>
> Do you want something like replacing some function f1 (say `exponential
> function` you mentioned `{exp(x): x}` ) with some other f2 (say linear
> function, you mentioned `{exp(x): x}` ) in your expression ?
>
> On Friday, August 14, 2015 at 12:03:08 PM UTC+5:30, Adrián Ashley wrote:
>>
>> 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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>>>>>
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>>>>> .
>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Regards
>>>> *Sartaj Singh*
>>>>
>>>> *Mathematics and Computing*,
>>>> Indian Institute of Technology,
>>>> Varanasi - 221 005 INDIA
>>>>
>>>> E-mail: [email protected], *[email protected]*
>>>>
>>>
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