-(sqrt(x)*cos(x) + sin(x)/sqrt(x) + cos(x)/(four *x^(three / two))) = zero
minus ( square root of (x) multiply by co sinus of e of (x) plus sinus of (x) divide by square root of (x) plus co sinus of e of (x) divide by (4 multiply by x to the power of (3 divide by 2))) equally 0
minus ( square root of (x) multiply by co sinus of e of (x) plus sinus of (x) divide by square root of (x) plus co sinus of e of (x) divide by (four multiply by x to the power of (three divide by two))) equally zero