(-sin(x) - cos(x)/x + three *sin(x)/(four *x^ two))/sqrt(x) = zero
( minus sinus of (x) minus co sinus of e of (x) divide by x plus 3 multiply by sinus of (x) divide by (4 multiply by x squared )) divide by square root of (x) equally 0
( minus sinus of (x) minus co sinus of e of (x) divide by x plus three multiply by sinus of (x) divide by (four multiply by x to the power of two)) divide by square root of (x) equally zero