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Student Support Forum: 'Solving for when function not equal to zero' topicStudent Support Forum > General > Archives > "Solving for when function not equal to zero"

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Author Comment/Response
Bill Simpson
02/27/13 01:15am

Here is an example kappa

In[1]:= kappa[t_,lambda_]:=lambda^2+t+1;
Reduce[kappa[t,lambda]==0,lambda]

Out[2]= lambda== -Sqrt[-1-t] || lambda==Sqrt[-1-t]

For different definitions of kappa the form of the result may be very different. Thus providing a single simple method of negating that solution seems risky. Manually I can say that your solution would be

lambda!= -Sqrt[-1-t] && lambda!=Sqrt[-1-t]

is the set of lambda where there are no zeros.

Without knowing more about your kappa I don't see a way to say any more than this.

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Subject (listing for 'Solving for when function not equal to zero')
Author Date Posted
Solving for when function not equal to zero alexvas 02/08/13 11:11am
Re: Solving for when function not equal to zero jf 02/22/13 09:37am
Re: Solving for when function not equal to zero Bill Simpson 02/27/13 01:15am
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