cos(two *x)/(x*sqrt(sin(two *x))) - sqrt(sin(two *x))/x^ two = zero
co sinus of e of (2 multiply by x) divide by (x multiply by square root of ( sinus of (2 multiply by x))) minus square root of ( sinus of (2 multiply by x)) divide by x squared equally 0
co sinus of e of (two multiply by x) divide by (x multiply by square root of ( sinus of (two multiply by x))) minus square root of ( sinus of (two multiply by x)) divide by x to the power of two equally zero