hi everyone , .... what is the function which is most like ( similar) the arcsin(X) ... ( more simple ) ???
actually ,I have stated by x^3 tor transfer it to became more like arcsin(x) but I did not have a result ...

Question

hi everyone , .... what is the function which is most like ( similar) the arcsin(X) ... ( more simple ) ???
actually ,I have stated by x^3  tor transfer it to became more like arcsin(x)  but I did not have a result ...

phi · Answer

If you want a "polynomial approximation" to asin(x), you want a taylor series see https://en.wikipedia.org/wiki/Taylor_series#List_of_Maclaurin_series_of_some_common_functions and scroll down to arcsin or see http://www.efunda.com/math/taylor_series/inverse_trig.cfm