[R] Looking for package to solve for exponent using newton's method

Ken Takagi katakagi at bu.edu
Thu Oct 10 20:39:11 CEST 2013

I'm looking for an R function/package that will let me solve problems of the

13 = 2^x + 3^x.

The answer to this example is x = 2, but I'm looking for solutions when x
isn't so easily determined. Looking around, it seems that there is no
algebraic solution for x, unless I'm mistaken.  Does anyone know a good
package to solve these types of problems? Are there built in functions to do


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