two *(x*(sin(x)^ two + cos(x)^ two) - two *sin(x)*cos(x)) = zero
2 multiply by (x multiply by ( sinus of (x) squared plus co sinus of e of (x) squared ) minus 2 multiply by sinus of (x) multiply by co sinus of e of (x)) equally 0
two multiply by (x multiply by ( sinus of (x) to the power of two plus co sinus of e of (x) to the power of two) minus two multiply by sinus of (x) multiply by co sinus of e of (x)) equally zero
2*(x*(sin(x)2 + cos(x)2) - 2*sin(x)*cos(x)) = 0
2*x*sinx2 + cosx2 - 2*sinx*cosx = 0
2*(x*(sin(x)² + cos(x)²) - 2*sin(x)*cos(x)) = 0
2*(x*(sin(x) to the power of 2 + cos(x) to the power of 2) - 2*sin(x)*cos(x)) = 0