Please, how to solve a log equation?

Please, someone can help me I solve an equation like this in the Matlab: 0.10==e^((-x*pi)/(sqrt((1-x^2))))?

Regards!

[David Young]

Is there some reason why you need to solve it in MATLAB, presumably with the symbolic toolbox? Solving it on paper is faster, I think, and gives x = -0.5912 in a few lines.

Answer 1

[Star Strider]

I agree with David Young, but if you absolutely must solve it in MATLAB, here are two options:

Numerically:

f = @(x)  0.1 - (exp((-x.*pi) ./ sqrt(1 - x.^2)))
x = fzero(f, 0)

Symbolically:

syms x 'real'
g = 0.10 == exp((-x*pi)/(sqrt((1-x^2))))
fx = solve(g)

[Raphael Barbosa Carneiro de Lima]

Thank you very much!

[Star Strider]

My pleasure!

Answer 2

[SAGAR OJHA]

e^2+5^3 -〖 log〗4

[SAGAR OJHA]

Please solve

[Walter Roberson]

Solve what? There are no free variables in that expression. Not unless log is intended to be a variable or e is intended to be a variable instead of e

[SAGAR OJHA]

I have not have any matlab software.. so please help for this question

[Walter Roberson]

exp(2) + 5^3 - log(4)

ans = 131.0028

I do not see anything to solve, though.