the equation is true. For instance, if i have p(x) as undefined function such like a curve of square function or any other undefined curve. We can call the denominator and the numerator with another function like g(x).
For instance, if g(x)=tan(x) which equals to sin(x)/cos(x) but in my equation i know the function in the denominator and also the function f(x) , but i do not know which function in the numerator. consequently i am trying to find p(x).
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or also you can find the equation which I want to solve
where I desire to find the second part of the numerator which is psi(w)