two *(sin(x)^ two - cos(x)^ two + four *sin(x)^ two *cos(x)^ two /(sin(x)^ two + one))/(sin(x)^ two + one)^ two = zero
2 multiply by ( sinus of (x) squared minus co sinus of e of (x) squared plus 4 multiply by sinus of (x) squared multiply by co sinus of e of (x) squared divide by ( sinus of (x) squared plus 1)) divide by ( sinus of (x) squared plus 1) squared equally 0
two multiply by ( sinus of (x) to the power of two minus co sinus of e of (x) to the power of two plus four multiply by sinus of (x) to the power of two multiply by co sinus of e of (x) to the power of two divide by ( sinus of (x) to the power of two plus one)) divide by ( sinus of (x) to the power of two plus one) to the power of two equally zero
2*(sin(x) to the power of 2 - cos(x) to the power of 2 + 4*sin(x) to the power of 2*cos(x) to the power of 2/(sin(x) to the power of 2 + 1))/(sin(x) to the power of 2 + 1) to the power of 2 = 0