Date: Jun 22, 2013 8:53 PM
Author: Nasser Abbasi
Subject: Re: solve help

>>

>> What value of 't' you think will make exp(sin(t)) zero?

>> sin(t) is between -1 and +1. So, just plot exp() between these

>> 2 values and you'll see it is not zero.

>>

>> You have to go to -infinity and beyond to have any luck of

>> making exp() in the limit go to zero.

>>

>> --Nasser

>

> I am using the solve function to solve the equation ft for t

>

> clc, clear;

> syms t ft

> ft = exp(sin(t));

> solve(ft,t)

>

> However, the result of this ^^^ is as follows:

>

> Warning: Explicit solution could not be found.

>> In solve at 179

> ans =

> [ empty sym ]

>

> I don't want to solve the equation for a value, but a variable.

>I want the equation t with respect to ft. Is this any clearer now?

>

Thank you so much, yes, much more clear now.

But the answer is still the same I am afraid. Please re-read what

I wrote earlier.

There is no solution to exp(sin(t))=0, in other words, there is

no 't' which will make exp(sin(t)) zero.

Did you try to plot exp(x) for x=-1..1 ? did you see exp(x)

cross the x-axis anywhere? It does not. So there is no solution,

it is never zero.

--Nasser