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Student Support Forum: 'How to find roots of a piecewise function' topicStudent Support Forum > General > "How to find roots of a piecewise function"

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John Liu
12/06/05 3:53pm

I need to find roots of a piecewise function, where the piece itself has an exponential, e.g.

45*Exp[-0.1*x]+3.5*x==44.296, for x>0.1

I tried Solve, but it does not work with Piecewise function, I also tried FindRoot, it needs a initial search point and I have to verify whether the root find is in the range. Is there any simple function that capable of doing this? I am using Version 5.1. I am not sure whether Piecewise (exponential) function has been integrated into Solve in 5.2

Thanks.

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