How can I solve function of x?

If I have a functions of x

Bx= function of x
By= function of x 
B=sqrt(Bx^2+By^2) 
Ax= function of x 
Ay= function of x 
A=sqrt(Ax^2+Ay^2)

how can I solve the equation A=B in MatLab?

Answer 1

[Walter Roberson]

syms x
Bx = formula in x
By = formula in x
B = sqrt(Bx.^2 + By.^2)
Ax = formula in x
Ay = formula in x
A = sqrt(Ax.^2 + Ay.^2)
solve(A == B, x)