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y′(x)cos(y(x))(cos(y(x))−sin(α)sin(x))+cos(x)(cos(x)−sin(α)sin(y(x)))=0 ✓ Mathematica : cpu = 0.159641 (sec), leaf count = 32
Solve[c1+2y(x)+sin(2y(x))+2x+sin(2x)=4sin(α)sin(x)sin(y(x)),y(x)]
✓ Maple : cpu = 0.465 (sec), leaf count = 33
{(−2sin(α)sin(x)+cos(y(x)))sin(y(x))2+cos(x)sin(x)2+x2+_C1+y(x)2=0}
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