Hello,
I want to solve: x*(3^x)*log(4)-x*log(4/3)-(3^x)+1=0 for x. I used the following
code,
uniroot(function(x) x*(3^x)*log(4)-x*log(4/3)-(3^x)+1, lower = -2, upper = 2,
tol = 0.001 )
While using this I am getting the following error. Can anyone please help me
out.
Error in uniroot(function(x) x * (3^x) * log(4) - x * log(4/3) - (3^x) + :
f() values at end points not of opposite sign.
Thanks in advance.
Shant
[[alternative HTML version deleted]]
Shant Ch wrote:> > I want to solve: x*(3^x)*log(4)-x*log(4/3)-(3^x)+1=0 for x. I used the > following code, > > uniroot(function(x) x*(3^x)*log(4)-x*log(4/3)-(3^x)+1, lower = -2, upper > 2, tol = 0.001 ) > > While using this I am getting the following error. Can anyone please help > me out. > Error in uniroot(function(x) x * (3^x) * log(4) - x * log(4/3) - (3^x) + > : f() values at end points not of opposite sign. >Try f(-2) and f(2) and you'll see the cause of the error message. Define your equation as a function f <- function(x) return(x*(3^x)*log(4)-x*log(4/3)-(3^x)+1) and do curve(f,from=-2,to=2) curve(f,from=-.1,to=.1) and draw your conclusions. Berend -- View this message in context: r.789695.n4.nabble.com/Solving-equation-tp2103698p2108544.html Sent from the R help mailing list archive at Nabble.com.