How to solve the exponential equation?

Hi, I want to solve the equation as follows:

a^x = b^x + c

(a,b,c are the constant)

How can I get the 'x' using matlab?

please help me. thank you.

Answer 1

[Star Strider]

It is sensitive to the values of the constants, but this code works:

a = .3;
b = .5;
c = .7;

fcn = @(x,a,b,c) a.^x - b.^x - c;

X = fzero(@(x) fcn(x,a,b,c), 10)

produces:

X =

    -701.0091e-003

[Yongjun Park]

thx :)

[Star Strider]

My pleasure!

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