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Student Support Forum: 'I want to approximate a root of this equation' topicStudent Support Forum > General > Archives > "I want to approximate a root of this equation"

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Author Comment/Response
Joćo Maldonado
03/13/13 12:04pm

I have

f[x__]:=(Sqrt[2] Sqrt[-E^(-2 p x) g R (-2-14 p^2-E^(2 p x) Cos[x]+2 E^(2 p x) p^2 Cos[x]+3 E^(2 p x) p Sin[x])])/Sqrt[1+4 p^2]


g = 10
R = 2
p = 0.3

And I want to find a root for:
f[x]^2 == - g R Cos[x]

When I try Solve, I get: "This function cannot be solved with the methods available for Solve", the same for Reduce, and when I try Root: "... is not an univarirate polynomial"

How can I approximate a root of the equation above?

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Subject (listing for 'I want to approximate a root of this equation')
Author Date Posted
I want to approximate a root of this equation Joćo Maldonado 03/13/13 12:04pm
Re: I want to approximate a root of this equation jf 03/13/13 12:42pm
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