two *(- two *x^ two *sin(two *x) + four *x*cos(two *x) + sin(two *x)) = zero
2 multiply by ( minus 2 multiply by x squared multiply by sinus of (2 multiply by x) plus 4 multiply by x multiply by co sinus of e of (2 multiply by x) plus sinus of (2 multiply by x)) equally 0
two multiply by ( minus two multiply by x to the power of two multiply by sinus of (two multiply by x) plus four multiply by x multiply by co sinus of e of (two multiply by x) plus sinus of (two multiply by x)) equally zero
2*(-2*x2*sin(2*x) + 4*x*cos(2*x) + sin(2*x)) = 0
2*-2*x2*sin2*x + 4*x*cos2*x + sin2*x = 0
2*(-2*x²*sin(2*x) + 4*x*cos(2*x) + sin(2*x)) = 0
2*(-2*x to the power of 2*sin(2*x) + 4*x*cos(2*x) + sin(2*x)) = 0