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2*cos(x)*(-sin(x))
2*cos(x)
5833971.421;428931
675;15
-2*cos(x)*sin(x)
| 2(3n-4)=(8n+5)+9 | | (-x)+(-x)+8=-2(2x+5) | | 3x-11=5x-27 | | 7x+8+5x+11+77=180 | | -2(3x+4)=-5(x-3) | | 3x+11=3x-17 | | 4(x-12)^(1/3)=-16 | | 96+.20n=n | | 2tanx*cosx+2cosx=0 | | m(x)=2.50(150) | | u+66=7u | | 2x-33=27 | | 8x-5v=18 | | m(x)=2.50x | | 3(t-4)=2(t-2) | | 70+40+x+50=180 | | -0.4q=-8 | | 25=7x-3 | | 0.70x+0.15(70)=0.35(42) | | 5(v-5)=2v-37 | | 10=9w | | 6x(12x)=8(9) | | (5/6)^(5-x)(5/6)4x-5 | | Ln(x^2)+1+x^2=0 | | ((x^(1/2)*y^-2)/(y*x^(-7/4)))^4 | | 7-3x+3=4 | | -6x-2(-3x+7)=-14 | | -11s=-38 | | 30=2x*3x | | 6x+4=2x-13 | | 45+2x=29 | | (2xy+x^4)dx+(3x^2+6xy^3)dy=0 |